@parados,
You're talking about "day traders" who lose more than they gain. That's because it's impossible to predict the market. There have been research done on this very subject, and found that over 90% lost money, a small percentage came out eve - after paying their commissions, and a small percent gained. Most fall into that 90% group that losses. This is "old" news, but here's one column on day traders.
http://investorhome.com/daytrade/profits.htm
I don't think the "real" wealthy worries about paying more in taxes. That's a meme spread by the conservatives who actually believes taxing the rich will cost jobs. It doesn't. The middle class people are who creates jobs. The rich sit back and enjoy their wealthl; buy second and third homes, yachts, helicopters, and women.