A genius in any field is overwhelmingly and irresistibly attracted to the field for which Allah, the Exalted, created him and in which He gave him the potential to be innovative and creative.
Even if he complains about the backlog in that field, it is still only area that he can work in with contentment and enjoyment, no matter what difficulties he encounters, how small the remuneration or how much he sighs and wishes he could do something more lucrative.
Regardless of how much he complains about the poverty caused by this profession, it is still giving him contentment and bringing out the best in him.
"Life is no more than minutes and seconds."
(from the book of Dr. 'A'id al Qarni)