One country's decline is a benefit to another one. It might sound cold and selfish but the truth is that if one economy is declining, you can use this to your advantage. If one country has a failing economy and they can no longer produce high quality products and their trade is losing significance then another country can sweep in and give better offers. This is simply the reality and so economy should not have emotions in because it will not do you good. If you want to improve your financial state, you have to compete. This is true even with smaller scale marketplace. Not a country's but let's say in one city. If one seller fails to deliver good products, you can sell better ones and take their customers. There is no space in the economy for soft hearted because everything is a competition. You have to compete for resources. You have to compete for demand. You have to compete for customers.
The whole world is moving forward in a competitive manner, if you keep yourself behind you are financially lagging behind. If you want to participate in any profitable project, then before that you have to move forward according to the plan such as whether your capital can carry out your business strategy with the amount of money you have or you have to borrow. Some banks are ready to give you a loan to start a business, so you should consider whether you have the available amount of collateral. Without taking a loan you may not be able to properly set up a big project. The market competition will try to crush you so you have to maintain the quality of the product and take a strategy to supply it at a low price according to the demand.