The solution is really to go direct-to-consumer, through things like Crowdfunding (unfortunately Patreon now charges VAT). Though of course this adds a lot of overhead.
Alternatively, petition Governments to be leaner, and to increase retirement ages to 70 (pensions are the single major and fastest increasing Government expense), and to lower taxes (including sales taxes) with the savings.
Pressure on Google and Apple (via regulation) to reduce commissions is another avenue.