nightcraw1er.488: Well, I am personally really against Galaxy, however I don't believe they are actively doing this to force Galaxy. What you will likely find is that a patch does come out for the standard installer at some point coming up. It takes a little while to get this - one of the "excuses" for pushing Galaxy was that patches can be pushed out quickly by devs. And Gog have always been far behind on patches and things.
amok: Why quotation marks? Rapid patching and micro-patching is not an excuse, it is a fact that it is much easier via clients instead of packing installers.
Except of course that it clashes quite a bit with the excuse for why offline patches take so long to arrive.
Customers: Why are we getting patches slower than everyone else?
GOG: That's because here at GOG we take pride in the quality of our products. That's why we won't release a patch for a game without first having our own people test it intensively on a number of different hardware configurations.
Customers: But aren't you allowing developers to push any updates they want directly to the end users through Galaxy?
GOG: Uhm, well, what I meant was...
Customers: Yes...?
GOG: [runs away]
Apart from that, given that Galaxy patches
do arrive in a significantly more timely fashion, it really ought to be trivial to write an automated process which packs the same changed files into an offline installer. If GOG are manually constructing offline installers at this point (their catalog is close to 2000 titles, and they've been in business since 2008), then they really are incompetent, either on a technical level (if they can't figure out how to do it) or as decision-makers (if they don't think it's important).
Additionally, even when a game is eventually updated, these days there usually isn't a patch, just an updated installer, meaning that for a large game you may have to download 10+ GB in order to fix a few spelling errors here and there in the game.