It is thanks to a very beneficial owner taking some very hard knocks from various governmental agencies (Ofcom is on the horizon too) the airfield is there for all of us.
We have had a number of fly-ins at the airfield (and I have seen you at some of them). Each time the airfield was very busy but the income was hardly worthwhile opening up for, as everyone brought along a free landing voucher and bought no fuel, despite it being one of the cheapest in the country.
But if people only dip in as and when and only buy the occasional butty, then one day the owners will chuck it in and hand the airfield over to a developer (as some strip owners have done, as well)
That post just about sums it up. The income from most small UK airfields does not justify the capital tied up. You can start with the value of the land and then factor in public liability insurance, maintenance, people etc.
All for a few nice day/weekend visitors who begrudge spending a tenner to use the facility.
If you want to sell a couple of cups of tea and a burger then a layby and a hot dog van is a better bet.
The same scenario is played out across the UK with village and country pubs.
A few weekend visitors buying a pint or two do not justify the investment or cover the costs. Hence the current trend to turn pubs in to houses which offer a better return.