All the alleged key causes of SOE [State-Owned Enterprise] inefficiency the principal-agent problem, the free-rider problem and the soft budget constraint are, while real, not unique to state-owned enterprises. Large private-sector firms with dispersed ownership also suffer from the principal-agent problem and the free-rider problem. So, in these two areas, forms of ownership do matter, but the critical divide is not between state and private ownership it is between concentrated and dispersed ownerships.
In manufacturing, where mechanization and the use of chemical processes are much easier, it is easier to raise productivity than in services. In contrast, by their very nature, many service activities are inherently impervious to productivity increase without diluting the quality of the product.
Rich countries have 'kicked away the ladder' by forcing free-market, free-trade policies on poor countries. Already established countries do not want more competitors emerging through the nationalistic policies they themselves successfully used in the past.
If we are really serious about preventing another crisis like the 2008 meltdown we should simply ban complex financial instruments, unless they can be unambiguously shown to benefit society in the long run. This is what we do all the time with other products-drugs, cars, electrical products and many others.