They're viruses, so they work by infecting bacteria and making the bacteria create more of itself. Antibiotics are found by isolating a compound some i.e. fung

They're viruses, so they work by infecting bacteria and making the bacteria create more of itself. Antibiotics are found by isolating a compound some i.e. fungi naturally produces. We figure out how to produce the compound and don't fill people with fungi to produce it. Bacteriophages are already the analogy to the compound itself. So we should be investing heavily in creating and distributing all variety of bacteriophage for all our common bacterial infections. 20k deaths/year from MRSA in the USA alone, 120k infections/year in USA and many of the survivors are left with life-long complications.