There are people in their right mind for whom dropping money on a baseball team is like a drop in the bucket for most of us. It's all relative. And they are well aware of what it would take to buy a franchise.
Baseball is not an "investment", but a rich man's play thing. That said, there are many avenues to help create write-offs and no, fans won't be expecting to pay $5 for a downtown seat, this wouldn't be the liquidation Expos from the nineties under Brochu, who clearly bought something he couldn't afford and ran very poorly. Plus, baseball's economic system has changed, there are greater revenue streams and more revenue sharing, so you might as well throw out all of those notions from when the Expos were around.