> you have to pay him back with interest or equity

That's the price for infinite scaling. If a business can't make more than that it should be shut down.

i.e. do you want to make 25% of 1 billion or 5% of 1000 billion?

The point the great-grandparent is making is that Google could comfortably finance the project itself and make 100% of the upside, not 25% or 5%.

	▲	re-thc 3 days ago \| parent [-]
		And the point here is borrowing more money increases available funds for bigger rewards. Google can fund 1 Waymo but not an infinite amount of them.