Technolgy always finds a way
At least so far. Anyone remember back in the late 1980s? Someone said color laptops will never happen and he was taken seriously. Even I knew that was a pantload.
As for SSDs, yes, they will eventually replace platters but as far as I know, they haven't exceeded 1TB with those yet (let alone 4TB) and they are still more expensive. They will get there eventually.
Then there is the helium shortage. Also, helium will leak out. I used to work on systems that used helium in cryogenic applications and we used a helium leak detector to make sure the connectors were tight enough to limit the leaks as much as possible.