Also like on any other system. When do you get to put a disc in and just play without at least a day one patch or pretty much redownloading most of the game.
This really isn't any more special on Switch than anywhere else.
Nintendo's set a precedent by announcing they're actually doing it with one of their services. That's the difference.
I mostly stick to PC - trust me, I get the irony of that - but it's because I'm not really afraid of losing access to my Steam/GOG/Origin/Uplay libraries anytime soon. I'd say Sony is probably the company most likely to remove access to games from its services next, but I think they might try to emulate what MS is doing with their backcompat strategy with the PS5. MS is the one console manufacturer I currently have the least hesitation with because they've made it a priority to not only keep older games online, but make many of them playable on current hardware.
I'm honestly baffled by a few things Nintendo's done, to be honest. For example, why is there no Virtual Console-like service on the Switch (I mean a traditional a la carte store, not something tied to a subscription)? The VC concept makes way more sense on the Switch than the Wii - emulators are one of the primary appeals of homebrewing a Switch - yet they seemingly don't see the potential for such a market.
But they're bound to the exact same rules as anything on a digital service. Once Sony will stop supporting the PSN on PS3, you also won't be able to redownload your games.
Right, unless those games are making money. Like I said, with MS's approach to backward compatibility, I wouldn't be surprised to see Sony try the same thing. If they do, they'll actually have an incentive to keep those games up for download, and won't just be doing it to keep fans happy.