OpenEmbedded
 The Problem (A)
 
 What is the Problem? (Variant A)
  You build an embedded device
  You decide to run linux
  You do your own embedded distribution
      which is a lot of work in the first place
      which will cause even more work for maintainance
      in the end, you will not provide security updates
      and you end up having a 'one time throw away' product
  Your users will not get your full build system (if there is such a thing)