It suppose to work like that. But it does not apperantly. In the ideal world growth should mean more R&D. Mariana Mazzucato has several books in this topic. Check it out.
2% within confirmed cases. There is a part of the iceberg which we cannot see because mild cases will not seek care. Actual mortality rate is far lower than that. You should check mortality rate for outside wuhan population. It is 0.08%
CT changes did not occur before disease progression. In one study it occurs after 3-5 days after being admitted to hospital.(I could not find the link right now sorry.) Therefore cannot be use for 'quickly diagnosing'
For flu, each sick person infects 1 person. So Ro is 1. This means no quarantine needed. But for covid-19 estimated Ro is around 2.5. So containing this virus requires quarantine.
Also this is a novel virus which means this strain is new and may be unpredictable. Mutations may occur.
We even not sure about source of the virus. If it spreads all over the world it could logarithmicly grow in number. Especially for undeveloped counties with weak healthcare infrastructure pose a real threat.