That is more likely luck. 17,000 people die of flu in a normal year. If this was new, I could see restrictions being imposed like a shot. Because we have grown used to it, then there isn't any fuss.
To use another example, if you invented the motor car today, would they be allowed to travel towards each other at 60mph (closing speed 120mph) separated only by a painted line? Not a chance. People would view it as madness, but it's how we work today.
I firmly believe The Lancet is right - restrictions are going to be with us for a very long time indeed. Any politician who says it will be over by Easter is an idiot. As I say, if we are honest about this and let the business world evolve, then we can get a better "new normal", but for that we need consistent rules and there's no sign of those any time soon.