Nobody bothers with emails. 99.99% of emails are SPAM so everything is ignored.

Another thing is that companies don't like stuff that is also sent to all their rivals and posted on Facebook etc - Why would they respond to a message that was mail bombed to everybody in the industry.

We now live in a world where its boots on the pavement - if you want to get the attention of a buyer then you have to go and show them in person.

I also think that companies don't like the idea of having to deal with a middle-man (i.e. a person that makes an introduction and then sits back smack bang in the middle and makes demands). Kinda like a two big dogs not being able to eat the bone because a little dog sits in the middle holding on to the bone store locker key for dear life.

I think that companies would say that if the products were as good as you say they are then why are you not getting venture capital and running with it yourself. If you succeed they would be happy to buy you out.

Again, this isn't personal, its just my personal views on the matter.