Why do you think Epic would want to close down Bandcamp? They are not in competition. Sure they may well pivot it away from what makes it desirable now, but I can't see them closing it down any time soon.
Large Companies like Epic don't by smaller companies like Bandcamp because they want the revenue stream that comes in from Bandcamp. They want the technology, engineers (acqi-hiring), data, or to kill possible competition. Keeping Bandcamp operating would take away from their main reasons from buying them. My personal guess is they want the technology + engineers for some new feature set they want. They won't want any bad press + they need time for planning/organizing before actually doing anything.
