I've got the feeling that because of the Google/Apple/Microsoft-rivalry a lot a companies are bought just so that the others don't get them. Company X wants to

I've got the feeling that because of the Google/Apple/Microsoft-rivalry a lot a companies are bought just so that the others don't get them. Company X wants to buy this popular startup? Ok, we don't need it but if they want it, they need it and we can't let that happen, let's buy them.