Doing any business and selling anything will make money, because unprofitable industries have long since disappeared, but the winners are always in the minority. You can see that most people don't make money, but it's not because of the project itself, because everyone in any project makes money, mainly because of the personal ability of the operators. The so-called low-cost and high-profit industries, the so-called risk-free industries, even if they really exist, you can see them, and others will certainly flock to them. At that time, what about low-cost and high-profit? This transformation has always been very fast.