There is no technology which is not harmful or does not require harm. Actually the world has never seen such a fast running wheel of death for countless beings like before.
Buddha was quite aware, that only less would understand his teachings and he did not carry the believe that he would be able to change samsara. The teachings of the Buddha lead to release and not to relax on hatred, delusion and greed. Craving is the root of suffering and he showed us to understand it's cause. We can try to live harmless as long as we want, but in that way we will just increase the greed, it's stilling-industry and wonder why something hit us one day (even we might thought that we are at peace).
We don't need to accept anything, the door is always open and still well preached. It would be very wrong, as you said "change your own behaviors", if we make time and society responsible for our own intentions and deeds.