“By contrast, Whisky is based on CrossOver, but we don’t produce any bespoke fixes. I, quite frankly, do not have the requisite skills or time to do so.”
Whisky’s developer stopped maintaining his free Wine front end for Mac and told users to buy CrossOver. He says Whisky gave almost nothing back to Wine while living off it. CrossOver’s revenue is what keeps Wine on Mac alive. Free wrappers built on someone else’s paid work have a shelf life.