The XBOne X is already a niche product for a niche audience. Microsoft's offer translates into buying a console more expensive than its competition (at release it will be the most expensive console in the market) through nothing more than horse power. All the XBOne games will come to the regular model, and has very few exclusives compared to its competition.
If the XBOne X had been released alongside the PS4 Pro, it would have stood a better chance. Now it's too late.