Does raising tax rates on capital gains raise revenue?

[opebo]

Torie, any problems with avoidance of the capital gains tax could be eliminated by making it apply upon any gain regardless of whether the gain is 'realized'.

Alternatively a wealth tax would be good.  I shall refrain from mentioning my own preference again.

[opebo]

I wasn't entirely serious in my proposal, however clearly there are problems with moderating privilege once it is granted.  I believe there are some countries which do implement a wealth tax, but I'm not sure how effective or feasible it is.