How highly paid they are is irrelevant. What their income is worth at the store or the car lot is what counts. When wages do not keep up with inflation you eventually get the major strikes, with the very highly paid as well as with the less well paid.
What wages do in relation to inflation is irrelevant. Wages move alongside per capita output. If per capita output stagnates, income stagnates. I understand they want a bigger piece of the pie. But that piece of the pie is extracted out of the incomes of people who buy gasoline and other refined products. If everyone struck, we'd be right back at our starting point, except with higher unemployment, lower relative wages and a less prosperous economy. Nations known for strikes don't generally grow their economies until they crush the unions responsible. Thatcher's demolition of British unions was a crucial step towards the rejuvenation of the British economy.