Half or more of the above figure have an iPhone / Samsung smartphone with an unlimited data plan. It’s complicated and not as simple as nothing to spare. Plenty that could spare, including software devs making 100k+ a year, don’t care.
I used to live in the San Francisco Bay Area. Some people making nominally large salaries don't have a lot of discretionary funds available.
I believe a lot of our societal gridlock is currently rooted in the deficiencies of our built environment. I am trying to focus on how we make progress on that.
A lot of people are currently in a situation where they need a high paying job to cover "basic expenses" and it's killing them. We need to find a way out of that if we really want to solve the climate stuff.