Privilege escalation is the biggest issue I think. Users on modern systems don't actually run as admins by default which makes it much harder for malicious soft

Privilege escalation is the biggest issue I think. Users on modern systems don't actually run as admins by default which makes it much harder for malicious software to compromise the entire system. Consider the average user. You can remove almost all malware and viruses because they only install and run with user permissions. Without spectre mitigations, it wouldn't be very long before all that malware was installing itself at deeper levels where the only solution is blowing everything away completely. I'm sure there is also a DRM argument somewhere for people who like that kind of thing.