> And I rarely see non-americans say something like "I think our customers would like it if we added X to the product, can I work on that?".

The most crucial difference in this context is that Americans are employed directly by the company, while foreign workers are behind several layers of management belonging to several companies. While you can walk around and deliver elevator pitches to higher-ups, foreign workers must track their time spent on tasks down to the minute in Jira. Then, they must find a manager who would like to pitch a feature to a manager who would pitch a feature to a manager in the U.S.