Regarding the (awful and puerile) cited Jacobin article, Canadian corporations pretty much unanimously support the Canadian single payer system - and even support expansions to it. So should Canadians reject their single payer system because of it?
The Jacobin article is pretty much the heart of why the US radical left is such a self-cannibalizing state.
Only in the USA would the radical left frame their support for single payer as some kind of Che Guevaraist revolutionary movement. It is not. It is simply a decent thing that that social-democratic capitalist democracies do. Of course a lot of capitalist employers would like single-payer - they save huge amounts of money of a very expensive benefit that they no longer have to provide the employees. So, it is perfectly fine that these employers support single payer. Regarding that issue, we should accept them as allies. Regarding other issues, we will not.
Save the radical revolutionary talk for the objectives that are truly radical and revolutionary…