They could limit their free tier to say 1000 characters and 10 retweets a day, while retaining unlimited browsing and "likes." If you want more than that, subsc

They could limit their free tier to say 1000 characters and 10 retweets a day, while retaining unlimited browsing and "likes." If you want more than that, subscribe to Twitter Blue. Or watch a 30 second ad to reload your character/retweet inventory. If they do it right they could get obsessive Tweeters paying $99.99 a pop like free-to-pay gamers trying to max out their gear.