Friend of a friend built and ran a very successful restaurant for a decade give or take. Staff was treated and paid well and everyone was happy. Eventually they sold the place because they just didn't want to run it any more and the new owners drove it to shit in all the ways you would expect. They felt bad but what else were they suppose to do if they just didn't want to run it any more? Sometimes the answer isn't money, sometimes the answer is the owner is just tired and wants out.