Prophets were chosen conditional to whether someone in the society was capable to accepting the position
Yes, it’s possible for ordinary person to reach the level so long as meet all the requirements. However, the number of the prophets was destined
Intelligent might not be a controllable factor, however it’s usage is controllable. Up until today, ordinary people receive inspiration in place of Wahy.
The bottom we are created with choices to exercise. Whoever makes good use of his intellect, desire and imagination, Allah strengthen him and made him to excel and vice-versa.
Indeed we all have choices to make. Our beloved prophets and Imams had choices too.