As in they buy them out. There should be a more laws preventing this from happening for large corporations.

We now see that Google Search is turning more and more to AI. Perhaps if Google didn't buy DeepMind, but some other smaller competitor did, they could've turned that into an advantage against Google.

Either way, it was a loss for the market for DeepMind to be bought by Google instead of forcing Google to come-up with its internal competitor.

Companies with billions in profit should be "incentivized" to use that money to create their own competitors against threats - not buy them all out (often just to kill them). I think we can all argue that large companies buying out small competitors is a net negative for the economy at large.