They've already made more money than they or their descendants (probably for generations) will ever need and are very likely also getting capital gains on that wealth through one way or another.
It would be nice first of all for them not to be tax dodging assholes, who like in the case of ActiBlizz not only didn't pay tax to the US but also manipulated the tax system to get tax credits to the tune of hundreds of millions of Dollars in just a single year¹ while also kicking out hundreds of their employees for short term gain.
And if their companies already use the tax system as nothing other than toilet paper, why would one assume they as private persons would do anything different?
I agree there should be less tax loophole exploitation. I think the best way to prevent it though is through law changes to remove the loopholes.
To compare against Blizzard's 2018 numbers, I checked out Google's 2018 numbers (full disclosure I work at Google, but my words are my own). I could be misinterpreting the document, but it looks like Google paid $14.5B in corporate income taxes in 2017 and $4.2B in 2018.
The $1 salary is just posturing.