Companies could still do that, except they'd have to act as a broker instead of just sending leads to every single contractor they have on their list.
Instead they'd have to send information to the contractors, the contractors would have to submit quotes or whatever information back, then the "lead generator" would send said info to the customer in one email, text, etc. that the customer could then call/opt-in to calls with specific contractors.
Instead they'd have to send information to the contractors, the contractors would have to submit quotes or whatever information back, then the "lead generator" would send said info to the customer in one email, text, etc. that the customer could then call/opt-in to calls with specific contractors.