YouTube is going to allow other users to gift subscriptions by paying money. The gifted subscription feature is already a feature on Twitch.
Twitch has already been a competing app for YouTube gaming. Although Twitch still cannot be left behind in terms of gaming, some famous streamers have left Twitch and started using YouTube gaming.
This feature is currently in beta stage and is available for UK and US. For this, users have to pay $4.99 per month.