My (limited) understanding is...
Branson runs Virgin trains. Under a Corbyn-led Labour government their licence to operate would lapse and the service would be brought under public ownersip/control. He also runs Virgin healthcare providing services under contract to the NHS (and pay no taxes due to offshore status). Branson would still be rich, but would be taking less money offshore. The public/government would win. There would a similar number of people employed.
Green... well, let's just see what unravels there. I hope he is forced to at least pay the pensions fund. Vile individual. Lessons need to be learned about the way he was able to mismanage things so badly to his own (and his Monaco-based wife's) advantage. The rules governing offshore tax status need to be looked at, imo. There is probably more chance of that happening under a Corbyn-led Labour government than either a Tory or "centre-left" one.
Corbyn has said the top tax rate would be 50p. Not exactly draconian, and certainly not 98p.
I agree that politics in this country has moved significantly to the right, in both major parties (and with the emergence of UKIP), as is evident in analysis of the Brexit vote. Not a good thing, imo.
The top 1% have done extremely well under the Tories. The rest of us, whether we be traditional Labour or Tory (or undecided or whatever) voters, have not. Corbyn's policies will appeal most to the most disadvantaged, but should appeal to everyone in the bottom 90-99% as well. The thought that traditional Tory voters couldn't possibly be won over by Corbyn's policies is rubbish. Socialism isn't a bad thing. Honestly.
By the way, Kinnock and Miliband lost. The Tories have a slender lead. It's certainly possible for Labour under Corbyn to come back at them strongly enough to defeat them over the course of the next 4 years - especially if the increased membership is anything to go by.