Re: "Across the free software world we have a problem in getting people to pay for things"
I can only speak for myself. I use free software by preference when my use case for paid software can't justify the cost. e.g. I haven't bought ABBYY because I only need to use OCR about once a year, if that. £165 is a lot for that.
I also use free versions when the alternative is a subscription. Yes I will pay £50 for the paid version of some product, or even £100 maybe. But not £50 every year forever.