That's a bit of an oversimplification to be fair. They offer multiple products (esignature, contract lifecycle management). Does not change that it's still a lot of employees.
Enterprise marketing and sales always takes up a LOT of people.
The Enterprise is PROFITABLE. The issue is that normally There Can Be Only One(tm).
The "security" companies like Auth0 were worth gigabucks NOT because they had a superior technical solution but because they managed to crack some number of large customers who now were never going to remove that system and would now be a cash cow forevermore.