There are little things we can do - we can vote for more progressive parties, we can take civil action when the opportunity arises, and we can help others in our local community.
But I hate to say this, but the financial and information networks on which capitalism depends are so intractably entrenched that there isn't actually much that can be done. What sort of revolution is possible? Where are the centres of power? It was straightforward in the past: you stormed a palace or government building and had the head of state shot. Job done. How do you being down multinational monopolies that ride rough-shod not only over nation states but supra-national organisations like the EU?
However, I would say in 50 years max capitalism will have hit a limit.
The social and infrastructural order of the UK is starting to disintegrate.The NHS is collapsing. Homelessness is at Edwardian levels and set to rise to half a million by 2040. The richest 5% of UK residents owns more than the poorest 25%. Wages are stagnating while rents and living costs continue to escalate. Investment and productivity are in decline and debt-based industries are creating asset bubbles. The western financial system has already collapsed once and will inevitably do so again.
Lawless, gangster capitalism is emerging, most notably in the internet in the form of the sex and gambling industries. Money from Mexican drug cartels, identity theft, child abuse videos, fraud and people trafficking operations is coursing through western banks.
Also the world is heating up. Not only Sub-Saharan Africa but Mediterranean Europe will likely become too arid for agriculture. That is going to mean mass migration - possible a lengthy period of masses of people permanently on the move. But when this happened last in the early Middle Ages there was complete chaos and a third of the population died. And this was a comparably tiny population.
Also, jobs are vanishing. Capitalism aims to transfer labour into capital and now it will pay the price.
So it's looking pretty bleak - an increasing concentration of wealth in the hands of an oligarchic elite while vast numbers of people live in debt-slavery eking out a living doing poorly paid, casualised work, engendering pathologies of ethnic fundamentalism, nationalism, terrorism, slavery, lawlessness, drug abuse, rising homelessness, social breakdown.
Too late to do much now.