I agree that most of the time with entrenched players it looks like there are no outs. But let's try to look at your example of ticketmaster. Your options depend on how much you are invested in concert-going as entertainment. If not much - stopping altogether might be preferable to further feeding the beast. If a lot - you can explore your local musical scene of amateur bands. The ones that play in bars and other venues that probably don't even sell tickets, or at least do it without relying on ticketmaster. Sure, you'll lose access to stadium-kind of experience, but there will be no change without at least some sacrifices.

I think you have it backwards. Wealthy already have all the power they need. Everyone else has zero power, unless they organise, pool their resources or at least choose to move in same direction independently.

Is modem firmware really the piece of software in you're more concerned about or at all? But still, if you want to see something changed on this front - give money to Purism or Pine64. Make sure to tell them that you'll continue your support if they continue moving in same direction.

There is obviously no magical quick denoising solution. But we still can demand less noise and patronise providers that at least pretend to listen.