It's more easily enforced, except when you don't give them enough they just go back to scraping. Or create a million fake developer accounts and pool the free q

It's more easily enforced, except when you don't give them enough they just go back to scraping. Or create a million fake developer accounts and pool the free quota if that's possible. These are not hypotheticals, loads of companies have done both against all kinds of APIs over the years, Twitter included.