I will support that "2 years is not enough" as well.. Many companies have come to the US hoping to cash in on the market here and found that the United States consists of 50 states.. Many of them LARGER than the nation the company's HQ is in.
In many countries you can walk from border to border in a reasonable time, In the US, up till the end of last month when she moved. If I wished to visit my Darling daughter. It was about a 2,000 mile Hike
Now it's only 1,000
Think about this
To see just one attraction.. JUST ONE here in the US (Smithsonian Institute Museum) would take over 300 years, if you never slept, took time out for meals, or ... "Disposal of waste". And that is actually a very small hunk of real estate.
Closer to me is the Edison Institute (Henry Ford Museum and Greenfield Village) You could spend a year just there. One of the exhibits there used to be.. About a mile and a half from where I lived. Passed it every day going to School.