Buddy, I don't have time to propery explain everything to you right now, (I have to go finish writing a Development Agreement between a city and my client) but in short responses:
A. Yes, lower income areas of SA have been ignored. But bringing a bookstore to the southside won't change anything. Per capita incomes have to rise. That won't happen until education levels rise, or growth restrictions and/or land prices on the north side encourage gentrification (not as likely given the current lack of land use restrictions on the nroth side). The Toyota plant will help a little; but a major University Campus on the south side will be an economic generator like no other. Not only will it employ staff that will want to be reasonably close to work, but it will pump out thousands of highly skilled, highly educated potential workers that that employers looking to locate or relocate place a premium on.
B. Corrpution works best with an ignorant, apathetic, or disptracted public. All of these things trend downward as education levels trend upward.
C. There is a different demographic that is evolving / emerging over the past decade or so in new growth areas that would make it a closer vote even in Austin if the SOS Ordinance was on the ballot today instead of 1992. Basically, sprawl areas vote red. Compare Williamson and Travis Counties as a good example of this trend: Williamson is almost exclusively sprawl and commuters driving into Austin. Overwhelmingly Red. Travis, although it has a growing Sprawl percentage, is still not a majority sprawl county. Majority Blue. When you focus in on Austin, overwhelmingly blue. Sprawl Republicans almost always are against stricter development standards in general (typical thought pattern: restrictions make it less attractive for businesses, and therefore force me to pay more in property taxes [which have to go up in order to support the infrastructure costs associated with sprawl, but this connection is often not made]), but almost always want the development to happen as far away from their particular neighborhood as possible.
What business leaders in Austin (mixed Repub and Demo), and increasingly across more of cental Texas, have come to understand is that the natural beauty of the City - the Hill Country, the green space preserved for endangered species and water quality reasons, tree preservation, etc is in fact one of the big reasons, along with a highly skilled and educated population, that employers list as factors associated with relocating to the area. San Antonio's leaders haven't come to that conclusion yet. Or if they have, they lack the political muscle necessary to transform that knowledge into a vision for the City. I hope it happens though. San Antonio has amazing potential.