It's clear many tenants bought for profit, helped by the Thatcher bribe. There were many properties 'bought' by elderly pensioners which were clearly bought by their families for sell on value.
The upshot of it all is that roughly a million homes have been lost to social housing as a result of the policy. The whole housing market and system is skewed to encourage home ownership, even to those who can't really afford it, which is why the bribe was needed in the first place. It's a distortion of the market and can bring misery to people who become homeless when they can no longer afford to own property.