Americans are fleeing the U.S. in record numbers—and they’re spending hundreds of dollars to get out fast. But ex-Google engineer and Rubrik co-founder Arvind Jain thinks they’re making a huge mistake.

“There are certain things in the U.S. today that are challenging,” Jain told Fortune. “But I think it remains the land of opportunity. It remains the place where entrepreneurship is celebrated.”

He would know. Jain left a small town in northern India, Jaipur—where, by his own account, 95% of people never left—moved to America in 1986 with nothing but an engineering degree and went on to become one of Google’s distinguished engineers before co-founding not one, but two unicorns: The cloud data company Rubrik and, most recently, Glean, currently valued at around $7.2 billion.

America may be grappling with rising costs, political instability, and a growing distrust of its institutions.

But Jain insists it remains the only place in the world where anybody can become somebody with a billion-dollar company (or two), like him.