Well one way you could do it is require a three month minimum which limits how many "blockbuster" games you can play but has staged/unlimited access to the rest of the catalogue. Bigger packages/loyal customers get access to more games.
The trick here is to get the customer on the subscription for long enough to even out the volatility of financing new games, especially for more original games that aren't baggaged by the success and creative choices of prequels. I'm not sure if this can be done for games unless a platform like Steam does it at scale, or someone big like EA does it with predatory tactics (difficult to cancel subscriptions, auto-renew with all plans, etc.)
Netflix is doing this to some degree so we'll see how much success they have. Valve is in perhaps a similar position with its usage data on PC gamers.
the price point of $20 is a bit steep for such a subscription. Perhaps $10 a month, and that seems to be stretching it. I think a lot of gamers are young and therefore cash-strapped.
Netflix style gaming rentals have been tried before - i don't think they succeeded much tbh.
The trick here is to get the customer on the subscription for long enough to even out the volatility of financing new games, especially for more original games that aren't baggaged by the success and creative choices of prequels. I'm not sure if this can be done for games unless a platform like Steam does it at scale, or someone big like EA does it with predatory tactics (difficult to cancel subscriptions, auto-renew with all plans, etc.)
Netflix is doing this to some degree so we'll see how much success they have. Valve is in perhaps a similar position with its usage data on PC gamers.