In 2000 (Measure A) they promised that one tax would cover BART, CalTrain electrification, and a couple of new light rail lines to boot.
Once we were in the showroom, so to speak, it turned out that these extras were a "dot com economy special", not valid during recessions.
In 1996 they tried to get more money out of us by bundling: county health services sounds better than "undercoating", but it's the same tactic: throw in something new to trick you into spending more than you want.
Now they're proposing another sales tax, just a little one. This is the hard sell--just come up a little on the price and we'll have a deal...
This is the point where any self-respecting customer walks out in a huff, determined to "take their business elsewhere".
There are, and always were, cheaper and maybe even better alternatives.
When "professionals" fail this badly, it's time for citizens to take planning into their own hands!