Sounds like 3d-xpoint is not going to live up to its potential. Which is sad, because if it received the same R&D and manufacturing budget that NAND flash does, it could have really been something.

It's tough to break into an established market with a new technology. Battery tech also suffers from this problem. It's hard to challenge Li Ion now, even if you have something theoretically better. The manufacturing advantage is just too strong.