Millenials don't play pinball, PacMan, etc. - they grew up on gaming console games, WoW, CoD, etc. - networked games where you play against others in a fantasy gamescape.
Only a bunch of 40+ year-old chiuckleheads think pinball, PacMan, and shag carpet-covered space-consuming tables with slow betting velocity/turnover and blaring electronic dance music would be welcomed in any casino by any casino manager.
Maybe they could put a few in the parking structures. Butt then there's the attractive nuisance to children issue. Can't have kids in gambling areas.
NTGL is simply a bunch of stupid, foolish, never-weres and never-willbees in a Romper Room rent-a-stall waay-off-the-Strip stripmall.