Yep, that MUST be it! Valve also must have a bad relationship with HTC then based on that logic, because as far as I know you can't buy v2 base stations from them either.
What everyone in this thread is failing to realize is that you don't need v2 base stations at all, they are just cheaper to produce as compared to the v1 base stations and have less moving parts (so less that can go wrong and might cause something to malfunction). The only real benefit to consumers of the v2 base stations is that it allows for bigger play areas (by adding in extra base stations to cover more area), and if you're planning to utilize them for that reason then I could see why those people would be upset.
In any other case, why not just buy some v1 base stations? They work great and as far as I know the v2 tracking isn't any better or worse. That also means you don't have to worry about getting controllers compatible with the v2 technology (so you could use second hand vive wands or something like that), and if you do want to upgrade to something like knuckles later on the v1 base stations have no issues with tracking v2 controllers/trackers.