That is a major Marketing Gaff - someone is not thinking .... people are sick of signing on everything and anything just because they showed an interest and raised their head above the parapit. That tactic throws back to early marketing days on the Internet when - as such - it was new, different etc. People didnt mind, it was all new, few sign on's etc. Now they use it so much its a Royal Pain. Test and Measure those who did sign on to get it over the following month - I'll bet you got nothing out of it.
There are other ways to get contact details to build a prospect database - this is not it. You should only ask, or force details from a prospect in return for a Product or Service the individual wants or needs. A Demo is neither a Product nor a Service. The people after it are showing an interest in the Product, thats fine for now - dont push it - and if they like the Product they will be back. Push it and they will avoid you.
Local Cafe: "Good morning sir, welcome to our great Cafe, before you sit down we would ask you fill in your name, address and email details"
I dont think so, I'm out the door.
Why is it different on the Web - it isnt of course, whats different is lack of understanding what the customer wants. Its a common issue across the Web.
Its the classic lesson in the ABC of Marketing - do not be motivated to find your customers, be motivated to understand them - then you will get results.
If you are still sceptical / stuck in the old ways - release the need to sign on for a test period - I'll bet my pension your downloads go through the roof. Thats worth far more in generating interest and developing follow on revenue, than forcing a new prospect to do the one thing most hate about the Internet - signing on as soon as they say 'hello'.
Zy