A corporation can still be sued in any state where it did something wrong (that's "specific jurisdiction"-- see my post #1 on this thread). That is usually enough to permit meritorious cases.
What this decision is about is "general jurisdiction"-- suing a corporation in State A for something it allegedly did in State [or country] B. SCOTUS said ages ago that such a suit could be brought in the corporation's "home" state, but a lot of states have interpreted that to mean "anywhere it does a lot of business." SCOTUS today said, no, a corporation only has one "home" (or possibly two-- the state of incorporation and the state where its headquarters are).
I’d read that, but didn’t put it together. Thanks for clarifying it. I enjoy your posts and feel free to ping me to any good legal discussions. Take care.