> Those percentages just -feel- way too high at first glance
Not really, no. Large corporations have lots of employees per corporation, but there just aren't that many of them, so the total number of jobs they represent is still a minority of all jobs, and the fraction of firms they represent will indeed be tiny.
Seems my issue was with the definition of small business. Found this link helpful in explaining what all qualifies in this number, and it's quite more than I expected...
Not really, no. Large corporations have lots of employees per corporation, but there just aren't that many of them, so the total number of jobs they represent is still a minority of all jobs, and the fraction of firms they represent will indeed be tiny.