Illegitimate companies and scammers have a simple objective. They're after your information in order to get your money. It's much more common for internet scammers to target hundreds of people for small sums rather than a single person for thousands. This is because demanding large sums for a product that is somewhat unclear is an obvious red flag to most.
Paid survey site companies invest billions of dollars into marketing research online. They always want to find out more intricate details of a consumer's relationship with their product. Whether it's a new television show or just an existing product line, companies like Disney, Samsung, and Sony go to great lengths to find out their ideal audiences.