Also, is it too little too late? Where will TSMC be in 2021?
Their 7nm process is quite different and the biggest potential roadblock there is EUV, which is the same potential roadblock everybody else is working against.
Bam! A tiny 10nm part surrounded by a bunch of 14nm pieces has a high enough yield that they can get production cranking and start selling "10nm" CPUs.
It is first time ( but I may be wrong ) Intel's has specifically mentioned Node Size with its competitor's name in an investor notes. Intel said they will have 7nm in 2021, and it is roughly the same as TSMC's 5nm. That is only half of the story because if everything works according to schedule TSMC will have 5nm in 2020, and 5nm+ in 2021. And by 2021, TSMC will have already shipped at least 100M to 150M 5nm unit.
Intel still has the lead in high performance node, but that will be tested when AMD launches their EPYC 2 with TSMC's High Performance 7nm later this year.
It is worth mentioning Intel shipped their first 14nm Broadwell in late 2014, which was already 6 - 8 months behind their original schedule. And they will be shipping 10nm in late 2019. For 5 years we had very little performance per clock improvement or node improvement.
We used to value Intel's CPU because it had highest performance per clock ( Now we know that was achieved with security trade off ) and industry leading node. Now both of these are mostly gone.
It would be interesting to see if Apple really moves to their own ARM CPU on Mac. ( Which I really don't care, fix the Macbook keyboard first )
As for Intel vs TSMC - The node 'sizes' aren't directly comparable, Intel's 10nm is roughly equivalent to TSMC's 7nm and Intel's 7nm is expected to be similar to TSMC's 5nm. TSMC is targeting 2020 for 5nm so Intel is a bit behind still but not as far as the node names would make it appear.
People also keep trying to defend Intel by saying their 10nm is roughly equivalent to the TSMC 7nm, but that's a pretty BS defense seeing as Intel hasn't shipped a real product with it.
Meanwhile TSMC is already working out the kinks on their 5nm process for next year. No matter how you slice it, Intel has fallen behind.
In practice, it's slower than Intel 14nm, denser (better be!!), and consumes less power. And has pesky yield issues, Semiaccurate is convinced it'll never be a profitable node.
TSMC plans to have their 5nm+ in volume in 2021 (5nm ships next year).
As for how Intel's 7nm stacks up against TSMC's 5nm+? We have no idea. We can't even go off of Intel's 10nm process cause its a complete clown show. Needless to say, by 2021 Intel's prior process advantage will be at least greatly eroded.