Personally, anyone getting into rom making for Atari knows there isn't any money going to be made, ever. Most well into the dozens, and a few lucky ones get into the hundreds. Has a homebrew hit a thousand legitimately sold yet? By that I mean sold through approved distribution like Al, not counting seedy bootleggers.
Personally, if I was doing it, it would be for the love of it, and sold or not, I'd want it available to as many people as possible, so I would release the rom. I may or may not wait for some sales, but I'd likely have some minor irrelevant change to the Rom as opposed to the cart. Something that would not affect the game, but let people know who buy the game that theirs is legit and not a copy or bootleg. Maybe a slightly different font on the title screen, or it literally saying copy, rather than copyright.
The watermark is an interesting idea, but a k of data is only a thousand characters, most games are pretty packed and I doubt they have that much space available, for something tens of thousands of people likely download, I just don't see it working.
It makes more sense for distributors, like al would have one, and others would have different ones. It would let you find the leakers of the roms (though tbh I don't think al is doing that)
Edited by Video, Thu Sep 20, 2018 5:41 PM.