The anatomy of unlimited hosting is simple in my opinion.

Can you provide unlimited hosting? Sure why not?

However, you must enjoy writing extra paragraphs to outline ALL your restrictions.
Example: All files must not exceed 100KB, or MP3s and other media files are not allowed etc...

But if you think that having a super lengthy TOS is not for you then I guess unlimited hosting is not for you either besides I still haven't seen an unlimited hard drive in the market.