Yes, it will work for the next 25 years, the next 50 years and the next 100 years. There have been naysayers predicting a doomsday and apocalypse for the Yeshiva system and its financial wherewithal due to the kollel system and whatnot for every year over the last 65 years. It’s always predicted to fail within 20 more years.
Precious few kollel yungerleit have gone of the derech due to financial circumstances. Indeed, many many more wealthy Jews have gone OTD in order to pursue the American dream of living an upper class lifestyle than have gone off due to poverty. On that argument your should rightfully being arguing against Jews seeking great wealth.