This is highly promising as it clearly promises a future cocktail of inhibitors that can deeply suppress a cancer. After all, massively reducing the cancer load and maintaining that is the equivalent of a cure. We have done exactly that with HIV.
Whether we can do it all at the same time or one at a time still works. Recall that HIV cocktails are been changed out as the effects are improved and made less damaging.
More promising is that this provides a commercial protocol that drives sustainable revenue for the drug racketeers as well. Alternatives will then allow actual cures.