This is a pretty empty argument. Instead of saying "you would do the same if you were rich", how about we change the system that allows them to do so? Then you can know that even if I become rich I won't do the same.
As far as a billionaire holding parties during a pandemic that killed over a hundred thousand people, you threaten them with jail time. It works, if you don't have a corrupt state.
The same pattern has played out in the past. This was not meant to be an argument per-se but a meta-observation.
You just need a government that wasn't captured by the rich, or any other elite. It's not impossible to attain. In fact, simply making the justice system free of charge and not allow advantages from money, the castration of the power of the executive, electoral reform to end the two-party system, income caps on representatives with complete removal of external financing, the implementation of referendums on major bills every 6 months and bolstering of direct democracy, réglementation on media to limit consolidation and financing, super-linear fine in relation to income, increased taxation of the top earners, and universal Healthcare.
It even that doesn't work, then the nuclear option is to progressively turn every corporation of over 3-10 employees into a co-op. Now you really can't have an elite anymore.
How would you change it? Even if you taxed Travis at 90%, he'd still be a billionaire and could hold parties, maybe a little less lavish.
Or would you make private jets illegal?
Once the virus is under control, then everyone is allowed to have parties given certain measures are fixed.