This, to me, looks like the PS2 vs Dreamcast move, where Sony blocked Dreamcast sales with PS2 hype. We've been waiting for 10nm for a while now, and now Intel is essentially confirming "yes, it's really coming this time" where they might not have otherwise--it's hard to not see that as a reaction to Threadripper. At least on the surface, increased competition has led to increased transparency, which is good for consumers...or at least I'm happy knowing I have the option to avoid a big, hot, power-hungry chip if I want to.
Although it has been deliberately deployed many times now, as you note one example of.
See:Itanium
Never compare an existing product to one that is not yet being sold. Never
It's Cannon Lake (Intel's first 10nm chip) which is supposed to come out this year.