I think... the countries like US have brought the vaccine and paid these guys, so they just need to produce without worry for money...ofcourse they will be making profits.
Just see the stock prices of these vaccine - Moderna stock price has esculated and these companies are making profits some way for sure...
that's the world...sickness also is business oppurtunity for these companies and they are not ethical, most of them tested their vaccines on poor, uneducated people without following proper protocals, NO can't trust them for sure!!!