I think you have to put things in the right perspective and find the right enemies here.
I am not sure if we are allowed to discuss this (if not mods please cancel/edit this post), but since it's publicly available information: Billie Joe is estimated to be worth $55 million. Let's say that the three of them together have $150 million, which I think it's actually way more than reality. This includes properties and whatsoever, it's not their liquidity, which will be way less than this.
A world stadium tour like the one we are talking about can end up costing up to $59M a month (https://www.royaltyexchange.com/blog/costs-of-touring#sthash.3lxCqNEt.dpbs). Let's even say that we are on the medium-lower range here, $25M a month (even tho I think this is not really the case since we are talking about 3 huge bands + supporting acts touring only stadiums, worldwide). Make your calculations considering how long this tour was supposed to be, and even if you consider all the artists, from all of the three bands, contributing to cover the costs, you can easily realise that this is not something that can be expected from them.
It's not about greediness or rich problems, we don't even know if and how much they actually contributed to cover the losses that this tour is clearly making in the current situation. It's just about economy, it's about the music industry that, as any other industry, in this situation need a state intervention to survive and be on its legs when things will be (hopefully) be able to be back to a new normality. And it's about the workers of the music industry getting paid their salary (a big cut of that monthly touring cost).
It's a totally different topic of discussion when we talk about huge corporations, having hundreds of millions if not billions in liquidity, CEOs worth billions, maybe also paying starvation wages and evading taxes in some financial paradise, that somehow manage to get access to public money, while workers get fired and small businesses have to shut down. That is the problem, that sucks.