Remdesivir was initially given as a drug for Ebola. It showed some activity but came in second to Zmapp therapy. Gilead started promoting it for Covid19 early in China and has been very aggressive. Due to the life threatening nature of the infections the trials were allowed to proceed without the standard regulatory requirements.
Big pharmas have lobbyist, political connections, plus they actively support congressional candidates. They know the chief staffer for ever Congressman by first name.
Brilacidin is going to have make it on it's own merits
That being said Remdesivir's and Brilacidin' s antiviral mechanism of action appear to be complementary . My bet is If Brilacidin aces the RBL Coronovirus infected human respiratory epithelial cells we will be in a combination trial with Remdesivir in a few months.