It kinds does - When something is bad enough to shut down all trade for a major economy it doesn't just restart overnight. Especially in a universe where we only kind-of have instant communication - some things like galaxy map updates are instant communication, but other things ares - hence the message/data courier missions and the lack of instantly available bubble-wide market information at least in station if not in our cockpits.
It's true that a major economy won't start over night.
But I think the closing of the market during lockdown is more to keep traders away from the system as it's currently very dangerous. The economy probably only works from their stocks into their storages to sell after the lockdown has been lifted (I don't know enough about the economy simulation of the BGS

)
I don't know what is possible with the current systems, but some examples of things that would change the tone of the system might include a much larger security presence with stronger ships, system wide broadcasts of information about who to look out for and report and detailing the new stop-and-scan policy, very increased interdiction rate, a capital ship at, or near, the station, small to wild price fluctuations of basic commodities like food as the lockdown goes on. Perhaps a desperate call federation-wide for indep. pilots to come help break the blockage.
That is pretty much what happens during a lock down
Increased security presence, higher interdiction rate, stop and scan policy.
If it was me I might even have spoken with the 13th and asked them if they would be game for spawning another CG with the aim of breaking the blockade by killing their members! If they were game, either make a PvP based CG ( whole section of the community would have been all over that!) or start spawning some NPC members of the 13th for the blockade...
Problem with the lockdown is the minimum duration. You have three days were it doesn't matter how many players work against it.
While it's a good idea to make such things as a PvP CG for breaking a blockade I'm not entirely sure if it's possible. How would the game know how belongs to the 13th and who not? Would instancing allow an operation of that size? How would you fight/punish combat logging during such a CG?
Too many variables to set something like this quickly up :/
Besides, with the attitude the 'Lord Commander' of the 13th displayed here and on reddit, it's highly unlikely that 13th and FDev could make an agreement over something like this.
This is an excellent idea! I particularly agree with wild price fluctuations of products as people in the system begin to panic buy and horde - the longer the blockade lasts the higher the prices gets! It could also trigger missions on the boards for food and supplies at high prices to circumvent the market, perhaps and increase in pleading charity missions, and (if we ever see them) missions to escort and protect key trade shipments. Adds a real sense of agency and dynamism to the universe for intensive for traders, pirates, PvE and PvP alike.
(see, I knew we'd agree on something eventually

)
Thanks.
I'm not particulary against PvP, I just don't like it forced upon me. Something like that blockade state would make the effect of a blockade in open visible through all three modes.
You could even give CMDRs a higher value in that system.
For example, a killed CMDR with/without bounty counts five times as much towards/against the blockade as a NPC.
Of course you would need measures to prevent an abuse of that system like a cap or a cooldown.