Free to fail
> Have you ever tried to build a business case which competes with free?
Yes, thank you.
As the next line alludes, you invoke the fear of uncertainty, the downside of the lack of indemnity (yes, it's free: but who can you sue if it all goes wrong?), and the small matter that the exec who signs off isn't spending his/hers/its own money - so "free" isn't that big a deal and can make them look amateurish if they are proposing a merely "domestic" quality product.
In the past, you could also invoke the lack of standards, ISO-ness, SLAs and all the other foundations upon which an IT empire could be (shakily) built.
However, as of now one can look at the financials of the suppliers:
> Those valuations are going to plummet
and the impending shake-out in the industry as some major players disappear up their own internet connections. Who'd be the one to recommend a free/cheap/low-cost supplier that could easily be out of business in a year, or less?