Ill elaborate a bit more, I own a trading card distributorship that I operate in my spare time(easy money little work).
Anyway, like most I collected in the 80s and 90s. Packs were cheap and my friends and I would try and collect our favorite players and teams and try and trade the rest. Cards back then were massively produced, estimates are that are 4,000,000 copies of every 1998 Topps card! Even the "rare" 1989 UD Griffey and 1990 Frank Thomas are thought to have a million copies. As is such, not much from that era is worth alot save for the very rare errors or certain local issues. The exception are some Basketball cards, namely MIchael Jordan inserts which still ell for decent coin.
As it stands now,, the hobby is not targeted towards little kids, its more for the middle aged man who likely collected in his youth and now has a bunch of cash and higher ends tastes and is aiming for some childhood nostalgia. While its still about collecting, theres also more of a lottery feel to it with packs and boxes selling for up over $1000 a pop. Thats not a common scenario, most stuff is still under $10, but the more money you have, the more opportunities you have to spend.
In the last few years, big buyers from China have come into Basketball and are dropping some serious coin on cards, some of my sales from the past year:
$4500
$4500
$4000
$2200
$2000
$1500
So yeah, its not really the same hobby as it used to be when you picked up a bunch of cheap stuff at the drug store and stuck it in your bike tires