Sure we can....and we should.

Good lord, we're not talking about rare or scarce resources... metal and wood.

THEY are the ones taking customers money, not the part suppliers. If manufacturers have shitty production planning practices and/or don't have the money to buy sufficient stock in advance (*cough* JJP) then THEY absolutely should be held accountable....

But, also don't discount the possibility that many of the "delivery promises" were completely unfounded bullshit from distributors that wanted to take your money...and told you what you wanted to hear.