Phage therapy is as effective as antibiotics but it is not as convenient as chemotherapy. One of the problems with phage therapy is precision. You have to know

Phage therapy is as effective as antibiotics but it is not as convenient as chemotherapy. One of the problems with phage therapy is precision. You have to know roughly what kind of bacteria is causing the infection. To know that it takes tests, and time, which cost money. Antibiotics on the other hand are broadspectrum and can be deployed without much prior knowledge (which is cheap, but also a problem that causes resistance). The other problem is production and regulation. Antibiotics are chemical, phages are biological. It is much harder to produce a consistent safe product with a biologic compared. We don't have the infrastructure (yet) to mass produce viral phages for consumers.