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Generally speaking, the stock price today is the best indicator of the stock price tomorrow.

Investors know that uber is not profitable and it's expected to be that way in 6 months too. The stock could do good or bad over those 6 months. Shares/options are risky.

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Shares are risky. Options (in general) are not, as only the premiums you pay are at risk (versus unlimited risk with shorting shares).

That's like saying lead balls are lighter than rubber ones because they're smaller.

The value at risk is the size of the investment.

Not unlimited. Your losses shorting a stock are capped at the price you borrowed it for (though technically it could be unlimited if you have to continue paying borrowing costs if you can't buy a share and close out your short [1]).

[1] https://www.bloomberg.com/opinion/articles/2018-04-11/-go-to...

There is no limit to how high the price of an equity to go, which is where your unlimited liability comes from.

I do wonder why you're being downvoted. Regarding a naked short, you're entirely correct in this ^

Wrong, you owe the stock, not the purchase price.

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