The thing is, once you get away from the idea this is a community space, then everyone can be charged for using it- dog walkers cost money (signage, dog wardens, emptying dog poo bins, buying bins) too. You could start charging 50p a day per dog to enter the park or get a monthly pass (or get a license and feed back the money that way). Would the dog walkers get behind that scheme?
It's like going onto beaches in other countries- if you sell your beaches and access to them, going to the beach is a wealthier person's thing to do. Cleaning and maintaining beaches isn't free either, perhaps we should also charge £1 a day for the beach in Devon and Cornwall and Blackpool?
I hate it, living in the UK is anti-community minded, everyone is interested in whether they can personally go around the park at 9am on a Sun and stroll about or walk the dog rather than there being some give and take and understanding that is is better if the whole community uses facilities, takes exercise and does things as a whole. There is a whole body of research showing if people go out of their houses, engage with other people and feel social connectedness with others, part of something 'bigger', then their health and mental well-being improves.
Perhaps they should start charging all those Greek pensioners sitting on benches in the village square for repainting and repair costs.
This is an amazing initiative, self-organizing, with people volunteering time, going out in the fresh air, doing things collectively (which is good for encouragement, mental well-being), taking exercise ( I don't do ParkRun but I think it's great). We want more things like this, not less, our society is broken and individualistic and overweight and depressed enough as it is, without being charged for running around a park (instead of finding good solutions like varying route, every other week, asking for donations, making this a core part of what the council do).
I don't agree with all DrSeth has written, but asking the ParkRun organizers to do one sponsored run a year for fundraising to pay something back in would seem fairly obvious (and this is what say our Guide troupes do, we have free use of a hall which costs the Church money, but it's in return for two fundraising days a year plus Church attendance about 2x a year).
Swimming pools- I'd like them to be council run, our council contracted them out to a company who makes a tidy profit whilst doing the minimum repairs. Again, who benefits from this monetization of public facilities?