I won't address the political side of your post...this first part is asinine enough.
Most bizjet operators are not private individuals, they are corporations. Corporations that do business, and provide jobs and tax revenue to support the economies of the cities they are based and do business in. Hate to break it to you but if you make over 500k dollars you pay an average of 4-8 percent taxes in the good old USA. If you make per capita or between 40-90k then your average tax pay out is between 14-22 percent. Depends on how many write offs you got. A 10 million dollar jet is a real nice write off - for business use of course!
For my company, half the cities we fly to for active or future job sites don't have airline service. Those that do take 5-8 hours to get from our home airport to the destination airport, plus the time spent driving between home and the departure airport, and the arrival airport and the job site. That kind of makes conducting same-day business or multiple meetings in multiple cities impossible. Operating a business aircraft isn't cheap, but it buys the one thing in business that truly is priceless - TIME. BLah blah blah for a dumb a$$ blue collar working pilot you sure talk like your some commentator on CNBC..... The Warren Buffets/Bill Gates of the world deserve a corporate jet but the CEO of some tiny little company with a market cap of less than a billion should ride the airlines.
Think outside the stereotypical "OMFG rich people are teh evils!!!1!eleventy" box as to what business aviation really does...In the 1960s the average CEO made about 20 times what their average company pay was. Today that same CEO makes about 700 times more.
Besides...most of these CRJ-200 conversions aren't going to be flown in North America...they're destined for Europe, Russia, and the Middle East. Actually the majority are going to the USA if you look at simply the numbers.