So, FedEx owns a bunch of airplanes. Billions and billions of dollars worth of airplanes. Who bought them? The owners bought them. So you have three options:

1. The owners get some property rights ("ownership") for the money they put up to buy the airplanes and related other tools. Or,

2. When an employee is hired by FedEx, they have to come up with... something of the order of $60 billion / 100,000 employees, to pay your share of the enterprise you are becoming part of. Or,

3. We as a society don't have any capital-intensive companies. Who's going to buy the tools, if the one putting up the money doesn't get ownership? (And don't say "government". Government running private enterprise almost always winds up with too much mismanagement and graft.)