Most businesses would love to have the opportunity for customers to be involved in product development. Especially if everyone was guaranteed to purchase.
Interactive Democracy could be viewed as a system that allows customers (the electorate) to help develop new products (laws). Market research (referendum) is then carried out to ensure that it is what the majority wants, even before it is manufactured (implemented) and there is a guarantee that everyone buys it (tax).
This is very different from having a committee (Parliament) design the product (law).