i do agree with some of what you’re saying google is t limited to just discontinuing a product when it wants to kill it. it could easily make a new google mail branded as a a secure one and only existing accounts or business/edu accounts can get through.

i have many of the same concerns about google, and at this point as long as there aren’t interruptions to their biggest contracts in a meaningful way, i would not put it past google to get more closed off.