I do agree. Our business model is never going to be the same as a Man U or Liverpool or Arsenal so we have to make money where we can. Player sales, 1901 and the Terrace, signing players like Mitoma who have a huge fan base abroad and targeting ticket sales at DFLs and wealthy Mid-Sussex families. None of it is very 'Goldstone' but the upside is we're financially secure and a Premier League regular, rather than fighting to save a club with no money and no ground.Brighton/Sussex has always had a demographic that includes ‘wealthy’ people - it is one of the most affluent areas in the SE outside London.
IMO, we are noticing that as Brighton fans now because the Amex was specifically designed to maximise revenue from hospitality and corporate sponsorship as was the addition of the Terrace tbh - that was always factored in as a crucial part of our financial sustainability plans to survive in the Premier League. Lower league stadia (ie smaller clubs with less overheads) don’t have or need the same level of hospitality facilities and can survive (‘just’) on a more traditional fan base.
In general though, the football industry has changed dramatically in the past 30 years and one of the biggest changes is the broader family appeal of football (especially after some fairly successful World/Euro Cup runs and the rise of women’s professional football).
I've highlighted your first sentence though because it may be that Brighton / Sussex always had a demographic that includes wealthy people but not very many of them went to the football back in the day. The group I went to games with had three lads from Moulsecoomb / Bevendean and others from Whitehawk, Portslade and Lancing. Another group was from Wick, others were part of the original A21 club. We were a Sussex club still (maybe more as many youngsters now watch non league) but from all the wrong parts of Sussex. Now at the Amex you still get a lot of old school working class fans but there's a lot more money and a lot more families too.