This has been mentioned before in the thread, but:
While subscription services are great, and Roblox may have a web-accessible way to cancel game subscriptions, if there isn’t an on-site option, that would leave players to go to the game to cancel subscriptions, which presents the additional issue of the script for cancellation simply being excluded from the game scripting. Additionally, there’s the scenario that the player is banned from the game. Would games be required to stop banning players if they want to keep offering subscription services?