Most of that friend group are similar "natural Tories". Business owners, and comfortably off rather than all billionaire hedge fund owners or trade unionists and manual workers. 9 out of 10 Labour policies resonate well with us as a rejection of the clear excess and mistakes of neoliberalism. Of the brutal treatment of disabled, poor, and society generally. Of the application of market to utterly irrelevant things. Not as a vote to return to the Labour's Trotskyite Militant Tendency and idiocy of the seventies. We don't need to reinvent history and blame a demographic that knows no better...
I should probably add that for some the 1 in 10 policy that we dislike can sometimes be a vote killer or of veto level. :)
Most of the seventies problems can be explained by a) Nixon abandoning the Gold Standard and disassembly of Bretton Woods, both of which were hugely inflationary and b) the oil crisis. The Conservatives did no better in that era, and often markedly worse - fiscally, on labour relations, on balance of payments, even on defence. Heath did so poorly in the last administration that we had a three day week. Worse than Callaghan's later Winter of Discontent that brought Thatcher. Interestingly Callaghan's Labour were governing strongly in opposition to the unions during that winter...
The Tory move to the right could give Labour a lot of room to maneuver as an actual left-wing party, rather than seeking centrist votes. As I said, Corbyn himself may not be the one to lead it there, but I'd suggest that the 90s were a long time ago and it may be time to find some new lessons.