It's very hard to prove that though, Labour were a party in decline and things definitely needed a shakeup, mind you I'd have to say she probably shook things a little too much. It's swings and roundabouts, if it wasn't for Thatcher's government we wouldn't have had the economic growth and prosperity we experienced under Blair from 1997 to 2007.
...but then maybe without the growth and irresponsible lending under the New Labour tenure we may not hav been caught up so drastically in the recession that followed. Maybe if we'd stuck to primary industry instead of the tertiary economy we became under Thatcher we wouldn't have been at the complete mercy of other world powers? Swings and roundabouts. Very hard to see what might have happened had Thatcher not done what she did.
The economic growth was a short term fix due to her selling off everything that wasn't nailed down to the ground to her corporate mates in the US and creating a credit bubble. Once that wore off the economic downturn was inevitable, we no longer produce anything hence at the mercy of every man and his dog who can charge us what they please.
History has taught us two things:
1. The Tories invest disproportionately in the Private Sector thus abandoning things like Health & Education, this creates an underclass and increase in poverty by which Labour HAVE to spend (and often overspend) to compensate for.
2. Tories are all about short term money rather than long term gain. Labour brought in Minimum Wage, NHS all of which will last us a lifetime, Tories know the price of everything but the value of nothing. They'd privatise their own mothers grave if it meant an extra wad of cash.
Here's how society works in short.
Tories economic policies fail thus leaving us in huge debt, therefore public sector money cut whilst private sector can continue making more profits. Industry is destroyed thus leaving millions unemployed. Tories then bail out, Labour come in, face problems of mass unemployment and poverty and have to create Welfare state to look after the poor (which the Tories abandoned). Economic crisis (due to Tory policies & greed pay bankers), Labour voted out, Tory media blame it on benefits and most vulnerable.
Hitler was elitist re: race, Thatcher was elitist re: class. Therein lies the only difference. When she destroyed industry giving the working class nowhere to go, Thatcher's plan was to eliminate the working class communities completely. When you have mouths to feed and can't there are either two things you can do: 1) Resort to crime 2) Starve to death. #1 means you suffer at the heads of Thatchers "get tough on crime" and spend years behind bars for the slightest offences or.... Die.
Each to their own but in my eyes starving someone to death is no more or less abhorrent than firing squad I.e Stalin.