After all the clauses in the bsd license still limit your 'freedom' in this sense.
"This sense" refers to "People could make changes to our library, use them in their commercial service and not make changes public.". BSD does not restrict freedom in this sense. The only restrictions are those 2,3 or 4 clauses listed on the license. The GPL tells you want you can do, the BSD tells you want you can't do (which isn't much).
You can try to redefine free all you want. If one party loses rights at the expense of the other, calling it "free" is disingenuous at best.
So you think that money is the root of all evil. Have you ever asked what is the root of money? -- Ayn Rand