Think about the following three scenarios for a moment ...

Scenario One. You go to a conference. It doesn't matter where or what the topic is but you turn up because you've been invited or because you've paid to attend. Breakfast is included in the conference package. There's 400 people attending the conference but when you get to the breakfast table, there's none left because they've run out of food. When you ask the conference venue why there's no breakfast they throw up their hands and say "The company who provides our food assured us there'd be enough for 400 but only enough for 200 turned up. What can we do?".

And now Scenario Two. Same conference. Same venue. But this time there's only 200 chairs in the venue and you've got 400 people trying to cram into those chairs. It's getting pretty cozy and people are ending up standing or going home. You ask the conference venue why there's no chairs and they throw up their hands and say "The company who provides our chairs assured us there'd be enough for 400 but only enough for 200 turned up. What can we do?".