They have to understand each other, team owners and the players both suffers on this pandemic, in short they both lose money.
For players, I thought they only lose the opportunity to earn when they got suspended, injured and after no one will pick them, and I'm sure this kind of situation is something new, they haven't experience it in their life so they are also facing some problem now, at least some of them.
We know that NBA players making big money, but if they don't know how to save on this kind of situation, then they are struggling and might be complaining now, but at the end of the day they'll realize it's a global pandemic that stop most of the sporting events.
Keeping everything in good shape, both sides needs to agree and make a good deal to both survive this ongoing virus.