Different cultures have slightly different takes on collaborating professionally. Some cultures are more welcoming and actively look for collaborations, whereas others tend to keep more to themselves.
One person alone can only do so much. Obviously. What’s true of people is true of businesses as well. One company, in and by itself, can only create limited value.
Think of your smartphone. A plethora of different parts are involved, sourced from various manufacturers. Some automobile makers purchase engines from competitors to put into their vehicles.
To grow a business, collaboration has to take place.