This is the 10187th most frequent Russian word.
бизнесменам
"Dative plural form of 'бизнесмен,' meaning 'to businessmen' or 'for businessmen.'"
Here, 'бизнесменам' is in the dative case plural form, as it indicates the indirect object of benefit.
Эта инициатива, вероятно, будет полезна многим бизнесменам.
This initiative is likely to be beneficial to many businessmen.
In this sentence, 'бизнесменам' is again in the dative case plural form, showing who receives the resources.
Мы предоставили бизнесменам все необходимые ресурсы для работы.
We provided businessmen with all the necessary resources for their work.
Here, 'бизнесменами' is in the instrumental case plural form, as it indicates those who are present at the meeting.