It's not actually free if you read the terms in their entirety...
Example: A fictitious television commercial that states "Free 100%" at the rate of typical speech, only to say thereafter "warning, this product may cause a stroke or heart attack [insert legal bull****]... product results may vary and you're locked into a contract with us forever-and-ever BFF... [insert more crap]" like a chipmunk high on meth.
Nothing is free. Someone has to put in the effort to make something, and if someone ever tells you that something is free, then, the first thing you should always ask is "how're you going to **** me over?" Linux? Free (usually). Services? No way, buddy. This is just one example. Tom's Hardware, for instance, may have content that's free to read, but there're advertisements. So, is it really free? Not entirely.