The drop of entrepreneurism driven growth in the USA has a plethora of reasons. One of them is US's policy on immigration:
"For decades, the United States invited the world’s best and brightest to come and study at its universities and provided them with temporary work visas. But it placed tight limits on the numbers of permanent-resident visas for those who wanted to stay, so the lines grew longer and longer. My research team at Duke, Harvard and NYU documented that there were, as of October 2006, more than a million skilled workers in “immigration limbo” in the United States, with only 120,000 green cards being made available every year for their work categories. Ten years later, I estimate the number of skilled workers in limbo is roughly 1.5 million. I explained in my book, “The Immigrant Exodus: Why America Is Losing the Global Race to Capture Entrepreneurial Talent,” that this would lead to a reverse brain drain. That is exactly what happened."
Writes my friend Mr. Vivek Wadhwa in The Washington Post opinion column Fewer foreign entrepreneurs say they need the U.S. That’s a problem here.
This has resulted in entrepreneurial innovations growing across the world. Mr. Wadhwa's conclusion is correct - The tide has surely turned:
"The world’s entrepreneurs used to dream of coming to Silicon Valley because it was the innovation capital of the world and there were few opportunities elsewhere. This is no longer the case, as I learned during my recent trip to New Delhi. There are start-up incubators sprouting up all over India, and the quality of the start-ups is second only to those in Silicon Valley and China, which are running head to head.
I spoke to about 50 entrepreneurs at local incubators and meetups. Unlike earlier generations, very few had interest in moving to the United States. Most said they believed the greatest opportunities were in India. As technology designer Himanshu Khanna said, “Why should I move to Silicon Valley when I have a market 10 times as large here?” Five years prior, Khanna had asked me to sponsor him for a long-term U.S. visa, which he could not get.
The tide has surely turned."