

People could still play the Overwatch that they paid for if the game hadn’t been designed to require Blizzard’s continued support and approval to function. In some number of years, Fortnite will be shutdown or replaced with something different and the people who grew up playing Fortnite will never be able to go back to play it again.
There’s clearly interest in online-only games that are killed. World of Warcraft and Runescape have classic versions so you can play a variation of the game how it used to be.
At least in the past, if you had a fixed amount of work to complete, underclocking would increase overall power consumption.