You’re right, they can, but they won’t.
I have no idea how things line up today, but when Carl Pohlad bought the Twins, his personal wealth was said to be greater than George Steinbrenner’s. The difference was Steinbrenner wanted to win and Pohlad just wanted to make a profit.
So yeah, they’ll foot the bill for one superstar, as long as they keep the rest of the payroll nice and compact. But why bother if keeping him doesn’t even get you a .500 ball club or into the playoffs? Send the guy someplace he can finish his career with a winning team.