People are gray mass of obedient rats that are ready to escape from the ship every moment they hear something, especially from high. If these technological companies will publish an official announcement about creating their own blockchain people of course will eat this.
But in my opinion here is one interesting question: is it possible to Mega companies to become first in market if they will come in?
I think, that it is really possible for them especially considering their capital. For example, more people will know about this, and more people will invest! They even may be wouldn't know anything about that, just IPhone 11 will be sold out and every dollar will be invested in blockchain technologies inside the company, after what they may start offer to buy another campaigns because of monopoly in economical is usual, so this way they will reach first place in crypto market, but it is only my opinion. How possible it is really I don't know, but if they will need it - it will be done)