“ Remind me again of how Pfizer, Moderna, and Astra-Zeneca are doing all this solely at their own expense, assuming all risks including liability for harm, and not charging a penny?”
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President Trump already paid Pfizer, Moderna, and J&J for the vaccines research, development, and the actual vaccines themselves.
Which is why no one is paying for them and no one is charging for them.
So greed and money is not a factor.
Money on the front end, money on the back end.
Is still money.
Duh.

You're falling short of even YOUR abysmally low standards -- and that's a very low bar in the first place.
I dub thee "Soi-Lord"