I'm not sure whether they ever were the saviors. Just think of this thread's intro:
https://mastodon.social/@HistoPol/111929410655085907
They have been coopting disruption (in the #Schumpetet sense.)
But the surely did not invent it. E.g. in the 1980's, the leading noise-teduction equipment maker, #DolbySystems, acquired the most advanced producer of a better system, #HiCom.
They bought it and they shelved it.