Vetting could be better with a lot of companies as well; remember not so long ago when Windows Defender decided a critical system file was malware and broke a ton of systems?
Verification. Vetting. Gradual release. Automatically disable extensions if they changed ownership, or if there's suspicious activity on the account of the owner (e.g. new login in another country).
And they need to take a MUCH harder stance on malware. Right now they're not even acknowledging there's a problem, let alone acting on it.