Sounds like you have very little grasp of how things work!!!
Next you'll be saying that everyone has a right to food, and that Tescos should sell at cost (I'd almost agree with that one - there's some blatant profiteering there as their profits last year have shown...). But I see nowt wrong with someone making a reasonable living so long as they're not ripping folks off.. After all, everyone's job costs someone else money!
FWIW, anyone can go and buy a duff property at auction, do it up and sell it on..
You can buy a terrace for £20k (if you look!), spend £10k on it doing (almost)all the work yourself and in 6 months sell at £60k. Hard work, but worth it.. No need to be VAT registered as doing up is VAT exempt, you can buy everything at trade (just go into your local builders merchants and ask for trade price - it's that easy!) and Bob's yer uncle.. Only thing is to be realistic - as crappy shows like Property Ladder so often illustrate, if you're ill-prepared you'll lose money..