Yeah: run for office, win, and then effect policy change. But almost no one's willing to actually do that. They just want easy outs like "contacting your MP" or "donating to an org that says they'll try to fix it".
But I don't seem to reach through. I'd be willing to do volunteer work or start an organization, but can't really run for office as I have another career.
Besides: I don't know what party would have me, because it seems to me that the politicians don't understand the arguments nor the premise – they're no tech-experts, after all (which is part of the problem, I suspect).
On a more recent example a footballer has managed to affect meaningful change and government u turns time and time again.
Charisma and making the population care about your cause is how you do it.