IPv4 dried up a long time ago. But it's different for every country. Countries like US and UK simply took over large blocks of IPv4 addresses and countries like Brazil got fucked. So, if you're in a country with a large pool, you won't notice any issues today, but if you're not so lucky, a lot of internet services are not accessible to you because some dickhead got IP banned and that IP is shared by thousands if not millions of users in your country.