You are all overlooking another reason why companies like EC, AW etc don't keep stock. Life limiting and manufacturers warranty.
Would you be happy having hyd hose fitted that only had 50% of its life left, as it had sat on a shelf just in case someone wanted it? Should the company sell parts like this and make a loss? What about having only a 6 month warranty on something that normally had 12, but again, had been sat on a shelf?
Essentially what this all means is they don't keep high stock levels, it costs money.
How this can be balanced is by having a solid supply chain. For EC products out of ECD this is pretty good, but the French aircraft.... Well, who knows what they get up to.
