I think it's important to note that unions aren't very good tools to avoid layoffs. If there is a company specific hardship, the union can't simply force the company to maintain headcount all the way into bankruptcy. On the other hand if there is a secular change across the industry, the unions can't prevent that change either. Easy example is how Big 3 automakers were 100% unionized in the 1970s and have since shed about 500,0000 American jobs despite producing more automobiles than ever.

Unions tend to be good at bargaining for better pay and benefits, but the current status quo is that most tech workers already have decent pay and benefits anyway.

1. Cul-de-sacs and surburbia lack through-streets. So it forces heavy long buses to navigate winding narrow loops. This makes your routing complex and slow.

2. When commuters travel suburb-to-suburb instead of hub-and-spoke downtown, origin-destination pairs are too scattered to support fixed routes with meaningful frequency.

3. Low passenger volume per mile makes fixed-route bus operations financially unsustainable.

4. Disconnected street networks and long setbacks force residents to drive just to reach a bus stop. Like seriously pull up google maps. There are a million suburbs in the greater DFW area where you need to walk 15 minutes just to get out of your neighborhood to the nearest main road where a bus stop would be placed. When it's a thirty minute round trip of walking, (not to mention what the walking situation looks like at your destination), and you throw in stopping at every bus stop on the route, every commute takes several hours instead of 20-30 minutes driving.

I'm not really sure where people get this idea that suburbs are drowning in liabilities where dense american urban centers are overflowing with revenues. The opposite is the case almost everywhere you look. Or that suburbs are only surviving by pushing costs unfairly onto cities. Most suburbs (in the case of Dallas being plano, irving, frisco, southlake/westlake) are self governing municipalities with their own school districts, police, city management, and credit ratings. Sometimes people say it's just that suburbs are new and have yet to pay the piper, but even in america's (and Dallas') oldest suburbs, many of which have replaced/renovated infra several times over at this point, they are indeed stronger financially than the urban centers they surround.