No, a legitimate new site can also fall for the temptation to fabricate news in order to raise revenue or political favor (and for the person in charge, get a promotion/raise). The definition of fake news include intent, and the knowledge that the information is false. If you take away either of those two parts you don't get fake news.
Legitimate news organizations make mistakes or might be taken in by reporters with bad intentions, but as an organization, their intent and purpose isn't to produce fake news.
But if their intent is to profit, reguardless of ethics and facts? Sure 'real' news will be included, but mixed with questionable content. This is the real problem and situation.
Yes. Bang on.
Manipulation of truth - normal business as usual by news sites or bias. (Old news?)
Fake prose with headlines for click farms (and now, political gain) - Fake news.
essentially We've got an additional problem to deal with.
If a news site decides to fabricate an article - thats fraud/libel and also fake news
That does little more then raising the costs of implementing manipulative falsehoods by making the traditional news a gatekeeper.