Google doesn't read e-mails from GSuite. So the change is to stop reading from Gmail's free accounts.
Original post: https://blog.google/products/gmail/g-suite-gains-traction-in...
Disclaimer: I work for Google, but not on this.
>Alphabet Inc.’s Google Cloud sells a package of office software, called G Suite, that competes with market leader Microsoft Corp. Paying Gmail users never received the email-scanning ads like the free version of the program, but some business customers were confused by the distinction and its privacy implications, said Diane Greene, Google’s senior vice president of cloud. “What we’re going to do is make it unambiguous,” she said.
"Consumer Gmail content will not be used or scanned for any ads personalization after this change"
https://blog.google/products/gmail/g-suite-gains-traction-in...
Anyway this may solve the tragedy of the commons situation we're in now and allow us to move away from the technology war of ad blockers, ad blocker blockers, ad blocker blocker blockers, etc.
edit: removed comment on clarity of Gsuite vs Free due to downvote brigade.