Well sure, a remaster is better.not sure about that.
But an emulator is cheaper.
i mean, from what i hear it isn't just the emulator but also tens of thousands of hours testing each and every title looking for issues and getting the publisher to fix them.
to remaster each and every ps game would clearly take longer but there are only a few dozen worth remastering. plus sony can sell a remaster at a profit. BC is being given away so there is no value to sony there.
you probably weren't answering from the perspective of sony though.