There are a lot of individuals who have the ability to provide those resources.
Even if that's a bad example, there are innumerable examples where individuals do choose not to help others in the same way that corporations don't.
Frankly, nearly every individual is doing that by not volunteering every single extra dollar and minute they don't need to survive.
You've now turned a moral willingness-to-help problem into a logistical and coordination problem.
What you suggest requires entire organizations to execute properly. These organizations do exist, such as Doctors Without Borders.
I don't think your original claim is fair, which amounts to "any surgeon who does not participate in Doctors Without Borders is just as bad as a landlord who evicts a family during winter".
What do you think we owe to one another, philosophically?
It's not about what I think. The post I replied made the assertion that individuals don't turn people away like corporations do (essentially).
My point is that individuals choose not to help others constantly. Every time I see a homeless person, I don't offer them a couch to sleep on. I could, at least once, but I don't. We all do that, most days multiple times.
And yes, that does apply to doctors who don't volunteer services. It applies to me too and, I bet, to the OP as well.
Firstly, there's a difference between failing to take an action, such as not offering a homeless person a couch, and actively taking an action, such as kicking someone out of their home.
Secondly, as discussed, the "individuals don't turn people away, corporations do" dynamic really does apply to doctors. If you were, say, on an airplane with a doctor sitting next to you, and you managed to cut yourself or burn yourself or something, I would bet they would render aid.
Basically you're equating turning someone away, and withdrawing something that someone has, with failing to actively seek out people who could need help. But I don't think those are morally equivalent. Maybe you're a utilitarian and that's fine, but I'm a virtue ethicist and I do not agree that equality of outcome means equality of morality.