Man, I kind like Gladwell, but he kind of glosses over a lot of things here. First, misstates how proposition 13 works. He says people who bought before 1978 enjoy the benefits of Prop 13, but those who bought after do not. That's just flat out wrong. If I bought my house in 1980 (or 1985, or 1995 for that matter), I'm still reaping some big Prop 13 benefits, just not as much as someone who bought before Prop 13. I think Gladwell is smart enough to know that what he said isn't true, so I have to think he's deliberately stretching the truth on this subject, which reflects pretty poorly on him.
For example, my parents bought their house in the West San Gabriel Valley in 1969. My mom still lives there. It has increased in value by about 35,000%, but is still assessed largely at what it's value was when the measure passed. Her neighbors have been there about 15 years. Their property value has increased probably about 25%. It would be wrong to state that they aren't benefiting from Prop 13. Just not nearly to the extent that my mother is. It's totally stupid and unfair, in that she pays far less than her neighbors for the same services. My family has always been pretty anti-Prop 13, but I wouldn't expect the law to be repealed any time soon. Though I could potentially see a carve out for commercial property, I'm not sure that would cover private clubs. You'd basically have to write a repeal that excluded residential property. Good luck with the politics on that.
If his point about equity membership was germane, wouldn't those clubs, upon Prop-13's enactment, just formed a corporations and sold shares? The corporation then owns the golf course, until that entity sells the asset, the ownership is unchanged, even if the individual shareholders are entirely different 50 years later. Problem solved.
And I get the idea behind the "treat them as public parks" argument, but his foundation for that argument is that, through Prop 13, the public has been subsidizing those properties for years. If that's the case, the public is subsidizing every taxpayer who derives any benefit from Prop 13 whatsoever. To be consistent, you'd have to open every privately owned property in California to public enjoyment, which is pretty much the destruction of private property. That sounds crazy to me, and I'm practically a socialist under today's definition.