Dealer sites are a mixed bag. Sometimes the dealers are fairly helpful and welcoming (at least for awhile). But over time (and sometimes right off the bat) they grow apathetic if not outright hostile towards their charging station. And many of them have puny little 24kW units anyway, which are really only useful to help them keep their own lot vehicles and vehicles in for service charged.
In a sense, I can't say that I altogether blame them. They were probably mandated by the manufacturer to install the thing in the first place and now they are responsible for maintaining it, and as we know, a lot of these aren't real reliable. Plus, a dealership is not exactly a hot destination for people needing a charge. I wish they would just be honest about the intentions of the charging station and not declare it as public if they don't have any interest in providing charging as a service. And at this point, I don't think there is a huge need for dealers to provide that service.
The manufacturers need to get their heads out of their butts and understand that having their dealer network install one or two fast chargers at their dealerships does not mean they have a network. Is that what Tesla did? No! They created separate sites close to highways and amenities and they sized them appropriately.
Now maybe it's not the place of manufacturers to provide a charging network at all. Tesla was pretty much forced to do it to generate business. Legacy automakers aren't necessarily interested in generating business for their electric lines (or at least they weren't--maybe that is changing now). Probably the win/win here is for manufacturers to stop mandating public stations at dealers and simply provide their own funding towards public networks. Well, of course now the government has stepped in, so they lost that motivation as well.
But back to Shell. Yes, they do have some dealership presence, along with EV Connect and ChargePoint who are much bigger in that space, but they do have their own standalone presence as well. One of their big problems though is that they were born out of the Greenlots network, which was really horrible. Take the worst aspects of ChargePoint's station ownership model and combine it with crappy hardware, poor siting, and an overall crappy network and that's what they started with.
In their defense, it looks like their new stations might actually be pretty good. But I think they have a long way to go to dispel the old Greenlots reputation.