PATCO screwed it up, then FAA caught a break and had a great opportunity to fix it, but....
Pressure to rebuild quickly, exacerbated by intense EEO mandates brought about another union that management essentially turned the day-to-day operation over to.
The genie is out of the bottle, the cadre of experienced personnel that is essential to ANY operation is gone now, replaced by scared kids who duck traffic and only stay on because of massive pay and ironclad union protection.
If you fly at all, thank your lucky stars for technology like TCAS...don't fly without it.