Nowadays, some Zoom video host websites are IPv6-only, and this causes problems for old dinosaur networks within enterprise companies. Seriously, I’d assume that they made such a decision out of pure economics. With IPv4 address exhaustion, an IPv4 address must be pretty expensive nowadays, is it? After some rough and tough searching, indeed, it purportedly get more expensive, and some companies are dropping their IPv4 addresses to save money. But, this problem notwithstanding, this is not speeding up the transition from IPv4 to IPv6.
20190906/Google which is cheaper public ipv4 or public ipv6
20190906/https://www.networkworld.com/article/3254575/what-is-ipv6-and-why-aren-t-we-there-yet.html