I can see a local concern doing this, so a particular person doesn't bother to get instructor rating, skip that hassle, but just advertises cheap pleasure flights, which for a lot of TL's that's all they want, that get purchased by a relative or friend, that know no difference.
The only provision is that no profit is seen to be made or not a main function i believe.. Can see the flying schools losing customers.
I think the spirit of some johnny turning up interested in flying and there just happens to be a ppl who will take that person up for cost will be abused.