The reality is that this is what we're moving to, break-up or not. The ownership of these publicly traded companies remains the same disparate set of high-capitalization funds.
People don't seem to realize that sooner or later EVERYONE will be under attack from this sort of '10 large companies that own everything' model
They seem to think - Oh my job is safe, so what do I care if taxi drivers/waiters/delivery people/warehouse workers have a tough life
sooner or later you will be a target, and then you will wish you had not ignored when everyone else was being taken out
because there will be no one left to save your job
That said, I'm not as confident that changing public perception will actually have any impact on what the law does. There is pretty compelling evidence that in cases where public opinion and the opinion of large capital holders diverge w.r.t. a law, there is no relationship between the public opinion and what law is actually passed. [0]
[0]: https://scholar.princeton.edu/sites/default/files/mgilens/fi...
If you are not sufficiently connected to the financial and political elite, you will eventually lose everything. It will happen in your lifetime. Nobody will be left to protect you against gross injustice. Worse than that; nobody will care.
We all have to take a stand and make a small effort at least.
Already, highly intelligent people are beginning to fall through the cracks of the system by the millions.