The John Lewis Partnership in the UK is a public limited company whose shares are entirely owned by a trust that pays shares of profits to all of its employees, which isn't quite "ownership" but close, and they have a $15bn revenue. Publix Super Markets in the US has a $45bn revenue and is privately owned with all employees receiving stock.
https://www.investopedia.com/articles/insights/051316/6-succ...
Financing is probably an issue at a certain level but it doesn't seem to be limiting otherwise. They're just unusual, although if you consider startups giving employees a stake isn't that strange today.