So I get an e-mail claiming to be for a free it-related resource from a software vendor. Click on the link, and I need to fill in full company details, including full address, phone number, country, size, etc.- all mandatory entries- in order to access the resource?
If you then look closely at the bottom of the page, in a tiny font, you CAN access “without registering”, but in order to take the payment, they will naturally require pretty much the same information.
A link to a second resource on the same site a few minutes later, from the same company, requires me to fill everything in again in order to get the second resource.
If you already have access to my details, via whatever source, why do I need to fill in this stuff (and more) again? Either accept what you have at face value, or fix your site so that it uses the cookies it plants to see that I’m the same person accessing the site again. And having everything as mandatory is overkill.