They all learned from MS. MS tried to buy Netscape but didn't offer enough and got turned down. So MS set out to use its position to boost its own browser inste

They all learned from MS. MS tried to buy Netscape but didn't offer enough and got turned down. So MS set out to use its position to boost its own browser instead, anti-trust followed because it was obvious MS was using its position to muscle out an independent company. For the big Tech companies now, small acquisitions are win win wins, they get the people, they get whatever was developed and they permanently avoid Microsofts Netscape situation. That being said, I'm guessing no small number of these startups were setup with the express purpose of being bought out like this.