I live in social housing (in the UK), and could easily afford to buy or rent non-social... and I was already in that situation when my current tenancy started.

You could say I abuse it, and I agree in principal. However, I'm only abusing it because social housing is scarce. The solution is to build more, and I do my bit by voting for a government that would probably do that.

If they ever decided to make it means tested, and my tenancy was at risk, I would just buy the house.