There are other ways besides brute force. For example, AMD got 20% IPC improvement on the same node, and apple's M1 SOC has built in X86 address translation to

There are other ways besides brute force. For example, AMD got 20% IPC improvement on the same node, and apple's M1 SOC has built in X86 address translation to improve cross compilation, it also has the 'neural engine' and whatnot. As for 100 years, nobody knows. Every step of the way so far, we accomplished stuff that we deemed impossible.