I think where bigger/ richer clubs would struggle to completely emulate them is actually providing the amount of chances they do to some of these players. Enciso, Buonanotte and Ferguson for example are all featuring extensively for them now, three 18 year olds featuring as heavily as that isn't often seen nowadays. I doubt any other clubs were looking at Caicedo and Mitoma 2 or so years ago too, yet both would likely have most of Europe's elite willing to pay a fortune right now.
We ourselves have been a prime example of being a club that can't (won't) provide chances. Sarr, Gil and Spence for instance, all three are older than those Brighton teenagers yet barely had a sniff here despite clearly being very talented. Had they joined Brighton, they'd probably be linked to clubs like us now for about £50m, lol.