There's side effect benefit of big kahuna companies mainly on the significant breakthrough and game changing research output because these excellent researchers are paid handsome money compared to conventional universities or research institutions. We saw this with AT&T Bell research labs with their inventions of transistor and Unix, among others. The same thing happened with Google research with (arguably) deep lear…
You really have to think about exactly how our modern markets work and why buyouts are such dominant strategy. It's only sometimes about taking what you buy then using it, it's mostly about taking what you buy to stifle competition these days.
Look at twitter and Vine, twitter bought then shut down vine as part of a standard operating procedure just to stifle competition, and they had so little interest in capitalizing on what they bought that it left a market gap so wide TikTok filled it instead. But usually these practices do not leave such big market gaps, usually they simply shut down competition successfully and the buyer wins. Then in many cases if the company owners refuse to be bought out, extreme anti-competitive practices begin to destroy their business, which will not be punished until long after the victims get shut down. So owners need to choose between a huge pay out, or their company getting destroyed. Owners tend to choose the former.