There's a huge difference between taxes (an aspect of societal behavior encoded in law) and personal lifestyle choices. We (supposedly, allegedly) exist in a political system that allows for some participation by citizens. One could choose to run for office, or campaign on behalf of a political candidate who might pursue progressive policies when elected. Over time this adds up to real change. I can see the point that perhaps slowly nudging a large political system towards real change is too little, too late for some issues. If this is indeed the case, then change must happen outside the bounds of normal political action. Take the tax issue you brought up: there is no law that would levy a tax on wealth. This law doesn't exist. If it existed, and if it were written without loopholes, it would achieve the goal of redistributing all this wealth. Unfortunately, this law isn't a reality, so until that changes we're stuck with other ways of making the rich pay. We can shame them, refuse to do business with them, and so on; but simply bitching about this at work won't move the needle even a little bit.
Personal lifestyle choices, on the other hand, are called that for a good reason: each person can make that choice for themselves. There's a liberal echo chamber in which the choice of one person, along with the right amount of advocacy and education, can be greatly amplified leading to a critical mass of people making a similar choice. Imagine an emergent group that is just like hipsters, but focused on environmentalism and sustainable living instead of rushing to tightly pack themselves into increasingly sparse and really expensive apartments in Brooklyn. Imagine communes springing up in agriculturally productive regions, helped along by technology and innovative thinking, operating fully on renewable energy, and doing brisk business selling food. Make this model repeatable by someone without extensive education, and you have yourself real change.
Google employs plenty of people who have the right ideology, drive, and technical skills to make this happen. Instead all they do is work for a giant advertising and surveillance firm.