It's always felt to me that 'unlimited' over a certain amount makes it easier for large companies to purchase/subscribe because it means they don't have the ove

It's always felt to me that 'unlimited' over a certain amount makes it easier for large companies to purchase/subscribe because it means they don't have the overhead of tracking usage. "Whoops, we're only licensed for 172 users, but we just hired Bob and we now need to get a new license key for him!" causing hours or days of delays just isn't appealing. Saying "unlimited" to the companies that have hundreds of users might be leaving some money on the table, but also might be netting some extra sales you might have otherwise lost due to fear of complex licensing.