This sounds almost too good to be true. Maybe I'm missing something but I don't even see a straightforward path for a virus to develop resistance against this.

This sounds almost too good to be true. Maybe I'm missing something but I don't even see a straightforward path for a virus to develop resistance against this. It would have to radically change the structure of its capsid and the article even mentions that it should be effective against enveloped viruses like Herpes simplex virus. If this works well in human trials this could be the best thing since Penicillin.