I only think your analysis misses two key factors:
The significant effect of inflation and interest rate manipulation in distorting the economic signals market actors use to inform their decision-making, resulting in malinvestment and a boom/bust business cycle
The incredible economic burdens imposed by arbitrary taxation and regulation to restrict the productive economy while protecting crony corporations.
I absolutely agree @jacobtothe. Thank you for those two great additions! As a small business owner, I am competing against megacorps daily... My largest competitor is a Microsoft owned business. Competing with big money has been one of our biggest headaches these past 7 or 8 years, and here in the UK regulations come thick and fast and, as you say, serve as a barrier to entry whilst preserving non-taxing paying mulitnationals' monopoly position.