As a progressive, I don't disagree that the will to use opportunity may not be universal; or at least that it may be scaled down a lot in some people in absence of compulsion. I think it's obvious that if you remove the necessity 'stick' of eviction, starvation, loss of a vehicle/internet access/autonomy/independence, etc that forces people to pursue 'opportunity' in the form of an otherwise unfulfilling and uncomfortable career, they won't show up to that hateful job anymore. I know some of my fellow progressives believe that we can offer UBI sufficient for basic necessities and people will still choose to show up and stock shelves, scrub plates, plunge toilets, or trowel concrete for $10/hr of 'fun money' opportunity, I think those people have probably never worked those fields in their life and have an insufficient imagination to predict how the people who currently do those things relate to their jobs.

Where I disagree with you is that I don't think this maintenance of a will to use opportunity and social obligation is worth more than the suffering of the people who are coerced by our maintenance of this necessity, or who fail to meet the demands placed on them and experience the consequences of that failure.

Yes, were we stranded together from Shackleton's Endurance hauling sledges, or adrift at sea rowing a lifeboat, or subsistence farming to eke out survival on a desert island, and everyone had to pull their weight or we'd all die, I'd pull my fair weight and I'd advocate for the expulsion of anyone who didn't pull theirs and in so doing imperil the entire group.

No, we are not stranded together in this way on Spaceship Earth. We have enormously greater wealth and resources than we require to sustain our existence. No longer does 90% of society need to devote themselves to farming wheat at 7 bushels per acre to provide bread for a himself and a small fraction in excess that with 40 of his neighbors' farms can support handful of non-farmers for his community like a blacksmith, a miller, a tailor, and a feudal lord. A single tractor can seed, fertilize, or harvest dozens of acres per hour, and achieve yields exceeding 70 bushels per acre. We merely have to distribute the value more equitably, even if the amount of that value is halved, quartered, or decimated by people opting out of the will to work.