I was an employee in a startup and had to take my MacBook Pro to the Apple store myself when it had recurring kernel panics. They bought a new MacBook Pro in the meantime for me to use, since there weren't any spares available at that time and Apple doesn't provide loaners. Since then, the machines have gotten even more expensive, the extras have been reduced and they've gotten less reliable. Only Apple fanboyism keeps the brand alive in companies, usually when someone influential likes having a MacBook and an iPhone.

Not every company is big enough to have service contracts with Apple. The IT department (two people) at that startup could fix Lenovo and HP machines thanks to them being the business models.