I've changed the laws in two countries through my lobbying efforts, though saying which two countries (and which laws) would be too identifying given that this is my quasi-anonymous account.
But on that note, businesses change laws through lobbying all the time. That is indeed one of the complaints about our current system of government: that it is too susceptible to lobbying.
Of course laws change in response to business interests. The context of this discussion is changing laws like the DMCA, though, which protect capital interests.
My point is that’s a field of political power that even well-off members of the working class like computer programmers have zero access to. You will never affect a law which protects capital interests like the DMCA by writing your senators and congresspeople.
Sure, but you might hosting fundraising dinners, or making donations the NGOs that do have K-street lobbyist on staff. Both are activities professional-class software engineers have access to support.