This feature would be the fastest way for the company to have the least number of paying users. As a user, I'd pay for one account and then share new spreadsheets with anyone who asks for one on the Internet.
If I’m the type of user who would ever consider paying, I’m most definitely not the type of person who wants to ask a stranger on the internet to setup a new spreadsheet for me every time I want to use one. I wouldn’t even want to ask a friend or coworker.
Fortunately the Internet is real big, so there's definitely going to be a discord or subreddit or private slack where one person has a paid account and just makes new sheets for other people. it doesn't really scale though and it's cheap enough that most people will just make their own instead of being reliant on someone. broke teenagers isn't a market you have to fully satisfy.
There are other billing models than per user if that's your concern.