The OP uses a false dichotomy. Closed source software can be free to use: Facebook, Instagram, Neogaf. And open source software can cost quite lot in various added value services.
Overall it can be assumed that paid software is almost dead.
If you try to get money for a startup that will sell software none of the investors would ever give you a penny.
Even in game development, the only industry where people still pay shit-loads of money for software, biggest players work off the royalties and not payments per se.
Overall from a business perspective open source is almost always better than closed source.
And if business is IT-related it should be using 100% open source. You cannot reliably fix bugs and improve closed source software, you're left at the mercy of the vendor who may have other priorities.
And this is reality in the industry: all the major players in IT like Google, Amazon, Facebook, etc. use open source everywhere.