I think people don’t understand the difference between digital audio equipment (like the AX8) and computers or smartphones.
Software gets more complex and old hardware gets abandoned on the computer and phone industry. It is a fact that a 15 year old computer is worth nothing and doesn’t run any modern software. So, old hardware becomes useless.
But audio gear and DSP doesn’t work that way. You can still sell a 20-30 year old TC Electronic 2290 digital delay rack unit for around $1500 and it still works and does exactly what it used to do 20-30 years ago.
You never see the same concerns on digital pedals like Eventide or Strymon stuff... And they also eventually get “obsolete”, and are worth less to resale, and get no updates whatsoever, but they still work the same way.
Of course technology evolves. Obviously the algorithms in the AxeFX 2 are more complex and realistic than an AxeFX 1 and they will be even better with the processing power of the AxeFX 3. But, there is a lot of AxeFX 1 users that are totally happy with their sound. They don’t get updates anymore, sure. But Eric Clapton never got any update on his Fender Tweet amps either, and they still sing
In summary: eventually the algorithms in the AxeFX 3 will be better and they will not be ported to the 2 or the AX8, fact. Eventually there will be an AX8 2, fact. One day Fractal will not be able to keep updating the AX8, also fact. But, as long as it is running, your AX8 will still sound as good as it does today for years to come...