It also doesn't mean that those same diver operators should turn a blind eye at your attempts to exceed your certification levels.
This is a loaded topic that's been the source of criticism before. 'Certification levels.' While it may be recommended that a newly cert.'d OW diver not exceed 60 feet deep to start out, how that diver proceeds into appropriate readiness for deeper diving can vary. It might involve additional coursework (e.g.: AOW, Deep Diver), or mentoring with a more advanced diver, or self-study and gradual advancement with one or more like-minded buddies.
We've also had divers point out that OW cert.s from days of yore often entailed more vigorous training & didn't assume people would take these additional courses, so not all OW courses are created equal.
In other words, a given cert. is not a restricted license prohibiting dives beyond 60' for OW or 100' for AOW.
I don't think anyone expects them to outright condone solo diving without a solo cert. As for turning a blind eye, that's exactly what a lot of people would expect.
If a dive op. for reasons of liability insurance coverage has to prohibit solo diving, or require a solo cert. for it, for boat diving, that's understandable.
If they put something in their customer agreement prohibiting it across the board, this will offend some customers, many of whom will simply ignore it and shore dive how they wish. Most likely, if the customer doesn't make a point of announcing what's he's doing, that's all there'll be to it.
If they actually try to become the scuba police of shore diving, we'll look forward to diving with their competitors.
Richard.