Starbucks new policy is:
"Buy something or leave"

Where they won't allow you to just hangout.

Quote BBC:
"Starbucks says it is reversing rules for its cafes in North America that allowed people to use their facilities even if they had not bought anything."

Next I predict they will stop accepting cash within the next 4-5 years. And so buying something will be a form of ID to use WiFi, in a "low-key bro" push to end anonymous internet.

And if you speak out about that, you're a tinfoil hat wacko conspiracy theorist.

Source:
https://www.bbc.co.uk/news/articles/cdxnv4rjdq4o