Whatever examples you can come up with for "why don't we solve this faster we have the solution", can be counter argumented with the fact that your solution can turn out to be strictly worse and have unintended side effects. Many times in history we thought we had solutions for things and then we didn't. If society, or "the system" is too easy to change, then anyone can take power and mess it up for everyone else equally as fast.
A slow changing system is preferable if you want to self protect against it, even if some avoidable misery is sometimes around due to this lag it's way better than someone blasting through everything because they know better.
This seems like classic immature "but why don't we change everything and do a revolution" which does not take into account the negatives of that or that the revolution will go like someone else wants to, not you - and these things only work if "you can control everything" which is basically why communism has not worked. A battle of competing incentives seems way better than some guy deciding he knows better about everything and if he can only "coordinate everyone" he can "solve everything". That's called a dictatorship, which comunist states tend to.