I "info" e-mailed about 7 companies outlinning my requirements subject matter > "new business enquiry" and 2 companies only e-mailed me back.
Out of interest, how detailed are 'your requirements'? If you've simply made yourself a client they can't work with, it might explain the lack of response (I won't say it excuses it, but potentially explains it).
Given the low entry costs into the market, there's always potential for 'fly by night' operators to set up a site and have it abandoned a week later. If you managed to hit firms on the other side of the market, you could simply not meet their requirements in terms of expectations or minimum spend (although I would have assumed you'd still get a PFO).