Earlier quoted context omitted.
This is more like if Google took action against Thunderbird and open-source email clients
No, because in those cases you're still a user of gmail. When you tell people your email address, or send people email, and it contains "@gmail.com", you're still implicitly advertising for Google. From Google's perspective that's still worth the few KB per day of bandwidth and 1GB storage (which the vast majority of people never use the entirety of, anyway) they're giving away. But when you use gmail accounts as fil…
As analogies go it's pretty close.