Part of the issue is that the Skylake-X-based Core X chips were based on the same chips Intel sells to its data-centre customers in the form of Xeon Scalable Processors. These punters are given more priority as data-centre customers generally dramatically outnumber the high-end desktop processor customers. Another thought is that there is a suspicion that the chip's launch was rushed and there was not enough time to build inventories of some of these Core X chips. As are result Chipzilla did not get enough of the chips to distributors.