Yes, maybe we need to define what costly is?
Questions posed-
How much would you be willing to spend for FSDb or FSD complete?
How much CAN you comfortably spend on FSD?
Would you be willing to jump car brands for a similar car with well equipped self driving assist. For instance if Ford's subscription is only 49.00 a month or 3K to get in permenantly, would you jump Tesla for Ford?
Would you consider another brand if that brand allowed you to carry your self driving ownership to another car of the same brand?
Tesla seems to be notorious for gradually closing doors to owners rather than opening them. Take the initial offer for free supercharging. Tesla was attempting to incentivize owners of those cars recently to update their cars at a discount but they would loose free SC. Whenever Tesla doesn't want to continue a thing they don't discontinue it, they price it into the stratosphere unless they are contractually obligated.
FSDb was at one time only 6K or less. Why has Tesla continued to increase the price of this feature? Some have suggested it was because they briefly wanted to limit the user base due to ongoing updates which might have affected more users.
Maybe another more simple explanation is because people are buying FSD at this price. Those buying it see themselves as helping in the development of it, or maybe they are just wealthy people that 15K is really nothing to just throw around. Pretty soon though all of those people will have pretty much bought it. As we can see by sales numbers of S and X as compared to MY and M3, That crowd probably isn't going to be Tesla's future bread and butter.
I think Tesla needs to get out of the elite business honestly, or at least allow the additional features to be reachable for all Tesla drivers. 15K clearly isn't moving in that direction, ESPECIALLY when there is now some competition.
In my case, I just spent some time drilling into my monthy budget. I managed to shave off a tidy sum. My motive was to spend less money, but I noticed I had made a potential "slot" for it if I wanted it, but do I really want to add all of the fat I just worked so hard to trim away back for something with zero appreciation? I would much rather see a number that better reflects those of us with less to throw around.