Why do you think we have zoning codes for how to build buildings? It's not solely because people refused to pay for buildings to be built the right way. Building things the right way takes longer and is more difficult, so people just didn't do it until they were forced to. The money is a red herring.

Businesses don't really use open source to cut costs. Most businesses don't even know they're using open source. The business hires engineers and tells them what they want built, and the engineers choose to use open source, because they're lazy and it's quicker than trying to get proprietary vendors approved and licensing costs included in budget forecasts. Maybe some tiny companies that have no money really need to use FOSS, but the majority of businesses pay for software when they need to, they don't mind.