We're not really sure yet whether TSMC have leapfrogged Intel in the longer term though. Intel's 10nm issues seem to have delayed their smaller process nodes in the medium term, but by how much is yet to be seen. It seems, for example, that Intel 7nm isn't in quite as much trouble as one might expect.

It's also naive to dismiss the possibility for Intel to have learnt a lot from some of the failures in 10nm that will prove useful in accelerating node development in the future.