Currently, yes. If Oakland doesn't get the crime problem under control, the tax base is going to disappear.
I think a high percentage of Oakland residents are on the dole or are making money illegally (think drugs) and are not paying taxes.
Even the crackheads pay sales tax. ;)
There is a town near Oakland that is quite upscale. Its called Piedmont.
Don't forget Alameda.
The Lake Merritt area was a little bubble of safety for a few years, but even that is changing.
Moving a couple miles isn't a longterm solution.
Not sure if their taxes pay the salaries of Oakland police though.
No clue.
I just checked Wikipedia. Piedmont is a separate, incorporated city even though it is completely surrounded by Oakland and they have the same zipcode. Homes in Piedmont cost a million and more, much more.