When you loan a few lacks/crores, the bank owns you, when you loan a few 100/1000crores you own the bank.
Banks are the countries/HNIs/retail investors investing in these countries, the countries taking all the loans are the ones owning all the investor community - countries/HNIs/retail investors.
What can the chinese/Japanese/HNIs/retail investors etc do to recover all that money, I tried to find an answer, HNIs/retail investors will pary to their gods that no default happens and the countries can do nothing more than sweet talk, persuasion on not defaulting, and other than that they have no option. The only other option is to sell off all the holdings they have at a cheaper rate in the market, but who will buy all that in such large quantity, there are no buyers anymore. Eventually a lot of this debt will be written off under mutual understanding, the bigger players like the US who make the rules of the game will move on as usual taking a slight hit but the smaller ones in Europe will enter the same phase as japan facing stagnant growth for years together, the other economies across as a result will take a hit for sometime, newer economies will take shape who will push the global economy ahead. With growing unemployment in the west, people there will look for better prospects in the east and move there.
China is not going bankrupt, they are sitting on huge cash reserves, the hit they might take is slow down on those high gdp numbers for sometime since the exports will take a hit and investment will take a hit within, there could be internal turmoil as people employed in export related industry will go unemployable, though china is trying to correct the trend but still they are way too over depent on exports.
Also how did they allow this debt to raise so high, has this been wantedly and consciously done so as to slow the developing economies?
Take the case of india today, and put the same in context with the west a few decades back.
India is making sure more and more internal consumption happens. How will you do that? Make sure people save less, spend more, so the savings interest rate in the banks offered will be less, banks will lend more to people, companies will raise loans within and outside since there is a process of high investment without which the economic growth will drop and then there are high returns to be made, the country will take more loans since they cant match their expenses, since all those populist measures initiated will have to be fueled from some source, this compounds yoy and then there comes a day when the country will be in no position to repay all the accumulated debt, and the country is on the verge of defaulting.
The cycle will continue, when we reach that stage, some other countries would have taken the role of global economic engines and people we despise today will tomorrow become a the very people who we will be praising just the way today westerns come over and talk all good things about us. By this time when we hit the wall, west would have recovered well and they will be again in a position to get moving.
Anyways, if you are an investor, invest in commodities, they will always be in demand and will always give you strong returns, come what may.