What a load of bullshit. First of all, libertarians have hardly "taken over" anything. If anything, the SV scene (as seen from the outside anyway) seems markedly less libertarian now than it did 15 years ago. Back when Slashdot was full of techno-libertarian types, cyberpunks and crypto-anarchists were spending gobs of time planning how to use technology to enable the stateless society, and rich libertarian leaning folks like John Gilmore were suing the government over the right to travel without showing ID... back then, the SV technologist scene felt very libertarian indeed. Now, if anything, it seems that the progressives have taken over. You still hear a little chatter about Internet freedom and the need for strong crypto, and there is the crypto-currency crowd who have actually gotten somewhere... but by and large, the rhetoric you hear out of SV seems to have skewed in a distinctively statist direction the past decade or two.
Heck, just go back through the archives here at HN and compare the talk back at the beginning, to the talk now... you can't help but be struck by the profound shift that's occurred. Now it's commonplace for people to criticize capitalism, denigrate the value of hard work (after all, all success is just "luck"), promote more active government involvement in markets, etc. Heck, I guess you'd almost be hard pressed to find a libertarian on here anymore... or maybe most of us just don't bother saying anything because we know we'll get shouted down (and/or downvoted to oblivion) by the statists.
Beyond that, the essence of libertarianism is absolutely to care about "right and wrong", as expressed by the Zero Aggression Principle. And libertarianism itself doesn't say anything about making money... there are plenty of "hippie libertarians" who don't give a shit about making money. IOW, just because somebody is a Capitalist or is concerned with making money, doesn't automatically mean they are a "libertarian."