οὕτως is the adverbial form of the demonstrative pronoun meaning this, with the meaning thisly, in this manner, in this way. There is no difference whether it only applies to the immediate example or the list illustrating the same thing. It is all to make one point.
This is my defense to those who would examine me. 4 Do we not have the right to eat and drink? 5 Do we not have the right to take along a believing wife, as do the other apostles and the brothers of the Lord and Cephas? 6 Or is it only Barnabas and I who have no right to refrain from working for a living? 7 Who serves as a soldier at his own expense? Who plants a vineyard without eating any of its fruit? Or who tends a flock without getting some of the milk?
8 Do I say these things on human authority? Does not the Law say the same? 9 For it is written in the Law of Moses, “You shall not muzzle an ox when it treads out the grain.” Is it for oxen that God is concerned? 10 Does he not certainly speak for our sake? It was written for our sake, because the plowman should plow in hope and the thresher thresh in hope of sharing in the crop. 11 If we have sown spiritual things among you, is it too much if we reap material things from you? 12 If others share this rightful claim on you, do not we even more?
Nevertheless, we have not made use of this right, but we endure anything rather than put an obstacle in the way of the gospel of Christ. 13 Do you not know that those who are employed in the temple service get their food from the temple, and those who serve at the altar share in the sacrificial offerings? 14 In the same way, the Lord commanded that those who proclaim the gospel should get their living by the gospel.
(1 Cor. 9:3–14, ESV)
Paul's point was just because he didn't use this source of income doesn't mean he had less authority as an apostle, and that he didn't preach for the monetary benefit.
But I have made no use of any of these rights, nor am I writing these things to secure any such provision. For I would rather die than have anyone deprive me of my ground for boasting. 16 For if I preach the gospel, that gives me no ground for boasting. For necessity is laid upon me. Woe to me if I do not preach the gospel! 17 For if I do this of my own will, I have a reward, but if not of my own will, I am still entrusted with a stewardship. 18 What then is my reward? That in my preaching I may present the gospel free of charge, so as not to make full use of my right in the gospel.
(1 Cor. 9:15–18, ESV)