Bands like Springsteen and U2 who have large fanbases, will have a huge 1 -2 week initial sales period with anything they release because that is the period that their fanbase is buying the album. Wrecking Ball after a month had fallen to 19, after a few months it was off the charts. It's pretty clear that the initial sales were huge because of his large fanbase, but then it dropped off a cliff 'cause the general public wasn't hearing it and buying it. That is what the New Yorker article made clear. You keep bringing up that it is in the top 10 albums of the year, but without his fanbase it wouldn't of registered at all. U2 and Springsteen will always be in or near the top 10 simply because they have millions of hardcore fans who will buy every album. What they aren't doing now is bringing in the general public like they used to.
Nearly every album, unless it is a debut album by a new artist, has its highest sales week in its first week of release. What you are describing is not unique to Springsteen and U2, but happens for all artist, especially ever since electronic point of sale tracking was introduced in 1991 to make the charts. Just about every album that has been released this year has experienced the same general chart tragectory in the weeks after its release as Springsteen's album has experienced.
Something else I found out.
Wrecking Ball is NOT off the charts! The most current chart available shows that the album is at #164! So 5 months after release, Wrecking Ball is still charting.
Essentially, your claiming this: If Springsteen had the biggest selling album of 2012, it would not matter and be no accomplishment because its just the dedicated hardcore fan base buying the album. But then if Springsteens not in the top 10 or top 20, its because he is an aging 63 year old who can't get appeal to people who buy albums. You've drifted from the latter point of view once confronted with facts that show Springsteen is still selling very well, and then drifted to the new one to explain away his success.
Before I get to R.E.M., lets take another look at U2. Lets look at POP. In the United States POP finished at #50 in sales for the year. That was indeed well below their standards. But why did the album finish at #50 since the fanbase is supposed to insure a top 10 or near top 10 finish? Was it Age? I don't think being 37 was in your old catagory? U2 certainly had a big fanbase before POP was released and they were not old with balding gray hair.
The experience with POP shows there is NO guarantee of anything! The POPMART tour also experienced a significant decline for the band in attendance, something that should not of happened if your claim about the fanbase was true. What gets played on the radio is a different matter because its not just a matter of the listening audience, its also heavily impacted by the people who own and program the stations, a relatively small group of people I might add.
R.E.M. had plenty of pop hits like "Stand", "Orange Crush", "The One I Love", Losing My Religion, Shiny Happy People, Man On The Moon, Bang And Blame etc. The band had 3 10 million selling albums in a row with Out Of Time, Automatic For The People, and Monster. They did do some large scale tours, and yes they did play stadiums. So your claim that they were always an Arena Band is not true. Here are some stadium results and stadiums they played on the Monster Tour:
July 22, 1995
Dublin Ireland
Slane Castle
GROSS: $3,194,076
ATTENDANCE: 78,000
SHOWS: 1
SELLOUTS: 1
Average Ticket Price: $40.95
July 23, 1995
Cardiff Wales
Arms Park
GROSS: $2,059,025
ATTENDANCE: 55,950
CAPACITY: 56,000
SHOWS: 1
SELLOUTS: 0
Average Ticket Price: $36.80
July 25-26, 1995
Huddersfield England
Kirklees Stadium
GROSS: $2,576,000
ATTENDANCE: 70,000
SHOWS: 2
SELLOUTS: 2
Average Ticket Price: $36.80
July 27, 1995
Edinburgh Scotland
Murrayfield Stadium
GROSS: $1,722,092
ATTENDANCE: 46,796
SHOWS: 1
SELLOUTS: 1
Average Ticket Price: $36.80
July 29-30, 1995
Milton Keynes England
National Bowl
GROSS: $4,796,364
ATTENDANCE: 130,000
SHOWS: 2
SELLOUTS: 2
Average Ticket Price: $36.90
They also played the following Stadium on that tour:
5 July 1995 - Ernst Happel Stadion, Vienna, Austria
7 July 1995 - Out In The Green Festival Site, Frauenfeld, Switzerland
8 July 1995 - Trabrennbahn Bahrenfeld, Hamburg, Germany
9 July 1995 - Duren-Badesee, Cologne, Germany
4 August 1995 - Sjohistoriska Museet, Stockholm, Sweden
6 August 1995 - Catania Stadium, Sicily, Italy
9 August 1995 - Ramat Gan Stadium, Tel Aviv, Israel
R.E.M. was definitely a big band.