Ya. Not saying that it's applicable to everyone (or even most people), but really once a team gets above maybe 20+ people actively using this, they're not going to blink at $1200/month (good for you now, but you'll be leaving a ton of money on the table, and it's hard to adjust expectations later).
Maybe capping the size of a team on the "pro" plan would be an inbetween, but it's something to talk to your customers about.
Happy to chat more directly; my email's in my bio.