You're forgetting something - 2-3 centuries ago, that would have been easily possible - as long as you find a little plot of land somewhere (even if in the middle of a forest) then you would have a good chance of a means to support yourself.
Now - find a place, where you are allowed to plant something of your own - at first, you'd need to find a plot of land that doesn't belong to anyone - and that, by now, in Europe is almost impossible. If land is arable, it is owned by someone. If it's a forest, it's owned by someone. The times where you could make a living for yourself without being "dependent" on someone else - namely, someone who is willing to pay for your services.
So, what will the future hold for the "lower qualified" jobs that robots eat up? They can't _force_ a company (or _any_ company) to hire them to work for a living wage.
But, before you try your line "live and die by your own efforts, not mine" - before you go as far as declaring whose lives are worth being kept or allowed to starve - just think about how secure your own job will be 10-20 years down the line. I've seen my net "middle-class" income being reduced over the last 12 years (through cut-downs by some employers - and other employers not willing to pay as much as the previous ones -- even though they make more profits; so it's not a cost necessity to go through the cuts -- it's just that it's possible, as there is a lot more competition from outsourcing jobs to lower-wage countries).
Another thing you should think about is the implications of what you're saying - "living and dying by your own efforts", this sounds "natural" in the most basic sense - it's what happens in the animal kingdom, but do remember that this is also what drives conflict in nature (the fight for survival). While your sentence seems to imply "either earn your living or go die quietly somewhere away from me" - rest assured, that it will rather create MORE violence, not less. (all the while also foregoing those "low-earners" as customers for your businesses - which might also be a chance for growth.
The current system of capitalism is too transfixed on "optimizing" (think: economies of scale; automation; ...) - and at the same time leaving governments unable to really care for their citizens, as more high paying jobs (and hence high income tax payers) get eroded, while at the same time, profits are being moved across the globe so that the companies also don't pay taxes that would make up for the shortfall from the eroding income tax base.
Your "fight for yourself" approach has only a very short term usefulness - so it's a great model as far as people in their 80s are concerned: the kind of people who do not need to care whether the whole system will break down 10 years down the line -- because they most likely be gone by then.