I can name so many tech companies that by that logic should be massively successful right now but aren't.
SGI?
Nortel?
compaq ?
Nokia
i could just keep going.
These companies were competing in markets with multiple entities and no strict IP entry lock.
So in case of Nokia: anyone with enough money could say "let's make phones". And as we moved from the boring traditional headset (that you used for calling and SMS) to smartphones (that suddenly were a part of ecosystems), market was dominated by companies with more general consumer electronics experience.
It's not just Nokia either. The move from old phones to smartphones purged the whole market. It's a different product, so it's being made by different companies.
It's a lot different with x86 CPUs. Intel not only is by far the largest manufacturer (none of the companies you mentioned had this kind of lead). It's also one of just 2 significant players.
Once again: if Intel was making much worse CPUs for a long time but AMD could fulfill just 20% of demand, we would still buy mostly from Intel - because we need CPUs and no one else can join this market or rapidly expand from a lower place (like Apple or Samsung did).
Zen2 on 14nm LP would offer more performance per clock at less power per clock. that is a fact stated by AMD themselves. So put up and prove them wrong!
That's a completely different situation. And yes, Zen2 is more efficient than Skylake even without the node advantage.
If both companies stayed on 14nm, Intel would launch their modern architectures to compete with a 14nm Zen2.
Both Sunny Cover and Willow Cove are more than capable of competing with AMD's stuff.
They didn't give us 14nm "Ice Lake" because it makes little sense at this point. They have to focus on the 10nm lineup to tackle what AMD does on 7N. Backporting the architecture and launching new product lineup is an expense they decided to delay until Tiger Lake / Rocket Lake. They still sell all the Skylake stuff they are able to make. There would be absolutely no gain from updating it.