OK, I did the eye contact exercise also. Not for an hour, but it was part of my day yesterday. All I can say is, most people are VERY reluctant to make eye contact. As in, they avoid it if at all possible.
And if they do make eye contact, it is extremely fleeting. As in, a millisecond. If you hold eye contact, and they see you smiling precisely at the millisecond they dare to look, they will smile back with relief. People must think eye contact is shady these days. Or they lack confidence. Or something.