Actually money is not a motivation but a necessity if you think how expensive British Grove Studio is to mantein.
He doesn't need the money. Even his income from the song publishing alone would be enough to live in the style he does.
His studio 'loses' money (technically) because he doesn't allow many people to use it.It is essentially his private studio, which he sometimes allows friends or respected others to use.
He's not putting out product because he has lost touring income. He has a studio sitting there and people like Guy looking for something to do.
It sounded like he had very little to do with the live box set, other than signing off on it.
He needs the money like I need money, like you need money, like everyone in the world needs money. Because, even though he is a multi-millionaire, he has bills he needs to pay like everyone else, with addition that his bills are much more expensive than mine or yours.
I mean, I'm not pulling stuff out of my ass. Mark himself said this many times when he's asked about money and financials. The balance sheet of BGS says it's in a net deficit position, which means that it can't operate on its own without intervention of the parent company, which is Straitjacket Songs Ltd. Which, of course, means Mark is pouring his own money into it. Is that all because he restricts the usage of his studio? Maybe. But it's irrelevant.
Now, I don't know for certain if he's putting product out because he lost the touring income, but it seems to be a very reasonable explanation. It explains why we're getting an album and an EP in the same year for the first time ever, explains the selling of the guitars, explains the return to the cash cow of DS.
But, of course, I could be wrong.