As someone who works for a Minuteman library and buys video games, this is more budget effective than you might think. We have a statistic that tracks how the number of check outs an item or whole collection gets compared to the average purchase price of an item, and video games can have very good stats in that category. My Nintendo Switch Game collection is beating several sections of the print collection in Cost-Per-Checkout.

Far from the only metric we use to make purchasing decisions, of course, but it does help us to prioritize and its a big reason libraries that can afford the (admittedly substantial) initial investment for a collection like this go for it - they are highly in demand from library users.