Well, I believe it will in the next couple of years.
After all, with AMD, we are still stuck at Polaris refreshes...
GDDR5/6 is very reliant on node shrinks to compete with HBM - and future iterations of HBM will only increase the pressure of it. Still GPUs are only edging now towards where it has any real advantage over GDDR and even then it is only high end/compute type application and HBM still needs a bit of optimisation for gaming use.
Funny thing is I got a lot of stick here and elsewhere ~3 years back for saying that GDDR5 ain't done yet including some real nasty comments yet here we are today, especially some vitriol from those that perceived my comments as a slight against AMD.