This discussion is somewhat similar to the reaction to the new $8,500 Korg Oasys synth. Many loyal Korg customers were very angry about the pricing of the new synth, in that it was so expensive and loyal Korg customers had already invested so much in Korg products. However, the Oasys is far beyond any other synth available (I own one) and, although the market for it will be more limited than for other Korg synths, its pricing is worth it (IMO)
I think that same will likely prove to be true for the SC VI. There will be nothing available to compare to what it can do.
The VIP pricing program is based on the philosophy of not having to pay for the same samples twice. It seems to me that there is nothing in the new expanded SC that was in previous VSL offerings (24 bit vs 16 bit, VI with incredible intelligence built in, new articulations). Previous VSL customers can buy the expanded SC at a considerable savings compared to new customers. Yes, it is still expensive; yes many will not be able to afford it all at once (or at all), but I don't know what more VSL customers expect.
The new SC is not an incremental upgrade to existing technology. It appears to be a state-of-the-art application of sample-based technology with absolutely no compromise made in its design. The R&D investment for these products must have been tremendous. The work to develop this had to have been a labor of love for the VSL team, but that notwithstanding, they are still entitled to receive remuneration for that effort.
Even if you can't afford the SC (I am in that group, at least for now), how lucky the music world is to have a group of people with the passion and the ability to create a product like this.