This statement was made by Ubisoft's director of subscriptions, Phillipe Tremblay, who recently spoke to Gamesindustry.biz about the digital future and Ubisoft Plus specifically. Tremblay states that people eventually "got comfortable" with not owning their CD or DVD collections, and that a similar shift in attitude "needs to happen" in gamers.
Even buying a game digitally from most storefronts doesn't mean you actually own it. You simply buy a license to play it. Look what happens if your Steam account gets permanently banned for violating their ToS, you'll lose access to any game you paid for on that account. Same thing with Microsoft or Sony. I think GOG might be an exception to this, where they will never revoke access to the games you previously bought, but I am not 100% sure of their policies.
Regardless, all gamers will never fully embrace subscription purity. There are so many games that require a lot of time to complete, especially so if you're an adult with lots of responsibilities who can only game here and there. For example, Baldur's Gate 3 is massive and I've owned it since launch. I've only gotten to Act 2 with like 60 hours clocked in and I still want to play it to finish. However, if it was on a subscription service, I'd be constantly stressed that it'd be leaving the subscription any day.
And what about classic games (includes new games that become instant classics) I'll know I'll always treasure and want to be able to play whenever I'm in the mood? To this day, my wife will randomly bust out Mario 64 or even a more niche game like Fable 2 and just have them be her comfort food for a lazy weekend. Hell, just a few months ago we got our our original Xbox to play some Fuzion Frenzy for nostalgia sake. Can't do that with subscription models.
Anyway, sorry for the tangent. I just absolutely loathe this crushing pressure by corporations to force our entire economy into being rent based. Every expert economist has been warning us about the dangers of this for at least the last 10+ years, and yet consumers keep blindly marching towards it because it's "convenient," totally ignoring the long-term consequences.
They are, when you buy a game from gog they send you the installation files. You install and run it with your own hardware whereas with Steam and other digital gaming companies you are just getting access to the game on their servers. By sending you the installers and letting you play independently from their servers gog gives up the ability to lock you out. It's the primary reason that they should be the first choice for where to buy a digital version of a game. The upside is that it's the closest you can get to actually owning a digital copy of a game; the downside is that playing on another device requires that you transfer files and reinstall rather than just logging into a remote server.