Erm come on ths ps3 was a pretty huge change, well the last gen was a big change to multithreaded developement.
I didnt say demos suddenly stopped but the trend is now either paying for alpha/beta access (rarer on consoles but you do get preorder only beta) or no demo at all. Given the trend its hardly a shock to hear X game dev won't release a demo.
Every generation for Sony has been a big departure for them. It didn't stop demos or reduce the numbers though, the higher standards we have in games is the biggest difference. Now devs/publishers are far more aware of releasing demos because it can make or break your sales. Not because they don't have the man power or lack knowledge. Don't forget that many of the builds they use at E3/TGS/PAX etc have to be made and they've never stopped, even when many of them tell us how much pressure it adds to their timescales. Funny how it's only an issue now when you can charge for it instead.
As for paying for alpha/beta. I don't know of one game which has been strictly pay for. They've certainly been easier to access if you pre-ordered the final game, but most devs will give alternate entry methods. The trend is also to open the flood gates and try and break the servers with as many people as possible.
But as I and others have said, bringing this back to Madden, we have no demo because of EA Access. It's a cop out to say that Madden has been going downhill for years but now with Access out they decide to stop releasing them like it's a coincidence.