It was, and Resident Evil Revelations wasn’t the first game they did so to, either. They apparently did it to a Megaman ZX collection and some other titles previously but those cases didn’t get picked up by the wider gaming community.

This is specifically about a company-wide move to harden their PC games against modding which they see as a threat against their bottom line (DLC sales) they revealed in a presentation last year. People had assumed this would mean their future games would have more annoying DRM schemes but no one guessed they’d start fucking with their back catalogue. Megaman modders have apparently already managed to circumvent the new protection, but the real threat here is that in case of games that have been around for years the original mod, fix and tool authors are not likely to be around to update their stuff to work with whatever crap Capcom decides to add to their games going forward.

Even if you can still pirate a cracked old version or use the Steam depot downloader to downgrade to an earlier build, it still completely sucks that a company can just decide to completely fuck over player communities and modding ecosystems a decade after the dust has settled. Imagine wanting to replay the original Resident Evil 4 a year from now, so you redownload it from Steam only to discover you need to get it from Fitgirl if you want to install the HD Project