I don't see that as a net negative. There may be a lot of people who are "rational", and possibly those who are already "winning". Knowing how to communicate with them is indeed a net plus, since this gives you an exclusive network other people won't have (letting you "win" as well).

Hence you seem to experience a net loss by being rational over not being.

Internal rationality I take as granted. But any cooperation with not so rational people is more difficult than with those (much) more rational.

The rationality increases the communication bandwidth.

What else do you expect - except a better information exchange with others if the rationality goes up with time?

What else?