See, this is a complete misconception based on a conspiratorial mind. I'm not blaming you specifically for it - I used to think the same way myself - but it's something I've seen repeated over and over by people as if it's fact, when in reality there's plenty of proof it isn't.
For example, there's several trials being done on common anti-inflammatory drugs to prevent the cytokine storm [1]. Dexamethasone - a very cheap corticosteroid - has been found to be effective in reducing risk for people with severe cases [2]. There's a bunch of other almost over-the-counter drugs being trialed.
Are companies interested in making a ton of money by developing a new drug? Absolutely. But that doesn't mean the scientific community is just 'sitting this one out'.
[1] https://www.ucsf.edu/news/2020/04/417196/clinical-trial-test...