I don't think this is true. When we initially found out about antibiotics, in about 15 years we got to about 5 working general purpose antibiotics (general = works against pretty much every pathogen). Since then we've found 1 more, in over 70 years.
Even if this new drug turns out to be a total success, counting on finding new drugs in the near future seems to be an extremely long shot. It's not going to happen. Rates of discovery predict availability of future drugs.
Furthermore the rate at which bacteria adapt to drugs has also increased. Adaptation happens faster and faster. While I don't know how that applies to this particular drug, a naive extrapolation would seem to indicate it won't last half a decade.
That is completely false. Just a Google search will reveal to you that dozens of new antibiotics have been found since but they didn't last long. BTW, Penicillin also lasted less than a year before bacteria developed resistance to it.
Even if this new drug turns out to be a total success, counting on finding new drugs in the near future seems to be an extremely long shot. It's not going to happen. Rates of discovery predict availability of future drugs.
Furthermore the rate at which bacteria adapt to drugs has also increased. Adaptation happens faster and faster. While I don't know how that applies to this particular drug, a naive extrapolation would seem to indicate it won't last half a decade.