I agree actually, my use of "medium-sized" was not best, in my personal view a medium-sized company is in the 200-500 employee range. These are definitively larger than that, however I assumed the person I replied to took "medium sized" to mean "significantly smaller than Apple/Google/Amazon/… …but not unknown". Because if I were to pull up a list of thirty unknown actually medium-sized companies pretty much nobody would recognise the names.