Sure, it
is a negotiation, and the shutdown is because neither side will agree to certain things the other side wants to do.
The Democrats won't agree to making the awful omnibus bill cuts permanent and essentially defunding the ACA, because they want to govern and actually help all our people.
The Republicans won't agree to providing and caring for Americans through programs that are already fully approved, because they want to destroy those programs without actually having the votes to repeal them, because they want to destroy the government and harm anyone who doesn't fit their particular view of what a "real American" is.
So while your words are technically true, they serve to obscure a very real difference in why each side is refusing to end the shutdown.
I don't know about you, but I think the side that actually wants to govern the country, uphold the rule of law, and help people in need, is really not the one that we should be blaming for refusing to compromise on their principles (however late they may have come to them).