Userspace programs can read other userspace programs memory, it's part of the standard win32 api[0].

> Cheats today essentially are like drivers, they do not run as userspace programs. Hence, they can do literally anything on your computer. In terms of privileges, driver code runs at a level as privileged as the operating system. Hence the need for programs that run at the level of the OS kernel to catch the cheats.

Some cheats nowadays do this, but they do this because of anti cheat programs. If there were no anti-cheat programs, they wouldn't have to do this.

[0] https://learn.microsoft.com/en-us/windows/win32/api/memoryap...