eli5: Why do computer operating systems have lots of viruses and phone operating systems don’t?

Question

eli5: Why do computer operating systems have lots of viruses and phone operating systems don’t?

In: 5085

Answer 1

Phones use CGNAT, therefore direct phone to phone communication is impossible, making virus development worthless.

Also phones are much much less capable than real computers, it’s hard to download a virus when your device almost has no concept of what a file is and wouldn’t let you execute it anyway even if you tried.