you'll have to be a little bit more precise
wht even is "big tech fiat companies"
although that would mean your prediction would be far more likely to be wrong
Discussion
Big Tech companies like Apple will never adopt any (technologically superior) decentralized technology because it threatens their business. The only method of adoption a company like that will consider is to "embrace and extend" it (into the fiat system) where they (and their government overlords) can maintain control. I think Paypal's version of bitcoin is what adoption would look like, which isn't bitcoin at all.
a company that produces a product or delivers a service has a place outside of the fiat model of drink at the spigot of the money flood
it just may not be as good as another that wasn't viable because it was further down the line in a fiat system
the complexity of the differences is too great to make any broad statements about it