Now lets have a look at the big groups nowadays
Yes there are groups from smaller companies, that are popular e.g. Ateez, Gidle etc.
But I still marvel at how BTS managed to rise from the bottom of the barrel, in the midst of kpop giants. All three companies had a monopoly on the idol industry. Now that Hybe is on the list of the Big companies. I really want to see a small group rise from an unknown company. Which leads to another point....BTS really helped people acknowledge idol groups from not so prestigious companies. e.g. Stayc, Ateez etc