They have 16 and 32 core count processors planned. These should be faster for programs with good concurrency although one detail that has gone under the radar is that Zen has half the SIMD performance of Intel AVX chips (it should take 256 bit SIMD instructions but doesn't execute them all at once). Still, this is unlikely to make a difference in the vast majority of software out there.
They already have > 20 cores for servers (> 40 with HT).
It is pointless for consumers. Well, except for squeezing a few dollars from the enthusiast who only want THE best, a profitable niche.
Why is it pointless? There is never too many cpus
Most user applications cannot fully utilize 40 cores.
But users run many applications at the same time.
Not 40 of them ^^
Well, I just started my laptop and I have 179 processes and 2381 threads running ^^
Which all together hardly use 3% of a single core.