Sweden has started to react:
Swedes now realize that the Russian threat is now and it is growing. The Swedes are now more aware of their precarious defenses but have not really done much to remedy the problem. Going back to the old “reserve army” will require the reintroduction of conscription and that is not popular. It is really all up to the Russians. If they become a scary enough threat the Swedes will rearm, otherwise it is mostly posturing and angst.
Perhaps Russia will give them the time.
But joining NATO is not a substitute for rearming.