We may have to move our gateway back off our main domain, and have a "recommended blocker", so that people don't jump on this.
Anyway, one piece of good news: despite everyone's belief about UDP transports never going through corp firewalls, QUIC now handles MOST (>60%, close to 80% i believe) of "Google Chrome<-->Google sites" traffic across the world.
So, temp setbacks may be annoying, but in the end, once users install IPFS -- and once we have browser implementations, we can make all the traffic look like HTTP TLS flows, so blocking it will be very hard without also blocking regular HTTP TLS traffic.
Many large or data-sensitive companies do SSL MiTM at their firewall so unfortunately that's not hard at all.
i.e. all bets are off. there will always be pockets. but over time we could win even there, as the perf improvement will matter.
(It's also illegal BTW in civilized countries! At least on networks with employees doing web browsing, as that's personal communications of the employee and and part of fundamental rights)
You should take a survey of F500 companies to see how many can actually hit the site. Or check your logs.