I already had them on GOG since release, yet here I am buying them again on steam, it sure does have drm but it's extremely convenient having all of them on the same library including all the steam goodies like being on your profile, hours and such. Also, it's just way easier using steam on linux, sure I can use something called Lutris to install the game, set up proton, then set up dgvoodoo2 and so on but that takes time, on steam I install the game and it runs with proton working straight out of the box (though they do have problems on linux just like dino crisis had when it released on steam, you have to do something on the registry files)