Hello Woko Haram,
It may make it more difficult to excel but that doesn't mean the best won't. One thing is for sure. Look at the big picture:
Back in the 1950's the ratio of pay between American executives and the average worker under them was about 15/1. Very similar to what exists in Germany today. Executives paid income tax rates over 90%, but only on the amounts they earned over everybody else. For the amount that equaled everybody else, they paid the same tax as anybody else who made that much. (That ratio is about 300/1 today.)
Back when America 'was great,' the government used the money to rebuild America. Interstate highways, Hospitals, schools, airports, the space race. It was a grand time. The 1950's. That's the age many Trump fans think of when they reminisce about when 'America was great.' The baby boom. The economic boom. The great American middle class.
Now, the rich have bought off most of government with big money, their taxes have been reduced to such a low amount that we run our country on credit and don't even pay for it, shoving the debt off onto the next generation. They have used that power to build their own wealth, and to make it very difficult for others to rise from nothing to wealth. The class war is real and it has been won by the rich. They have nearly all the money, the lower half has nothing perceptible at all, and the government is hopelessly in debt with no foreseeable possibility of ever paying it off. All of the wealth that could be extracted from the economy and from the government has been, and it has been done by a very small segment of our populace. It is so much that many functions in our society and government have been crippled to the point of ineffectiveness, education being a prime example as we trail other smaller nations by a great distance in STEM education, which is ridiculous and dangerous.
We have to fix this or we are toast.