Windows 10 will reach end of support on October 14, 2025. The current version, 22H2, will be the final version of Windows 10, and all editions will remain in support with monthly security update releases through that date. Existing LTSC releases will continue to receive updates beyond that date based on their specific lifecycles.
They will most likely continue to use win 10 oblivious of its EOL. I have seen many using windows 7 even now. Some tech-aware will install win11 in the same machine by registry hack or sth. Very, very few will consider the possibility of alternatives.
Don't underestimate the power of Normies. They don't know what a ransom is, nor the value of their own data. Any email requesting for ransom will go unnoticed or marked spam, and users will live in their normie nirvana, while their digital self will lie floating around internet, which they wont give a damn. After all, all their Facebook photos and tiktok videos are already out.