I know you're not serious, but for those who may think this is something that can be easily done...
To change what the park is doing, you need control of the Board.
To get voted onto the Board, you have to get a majority of stockholders to vote you and your cronies in to take it over.
If you can't convince the majority of stock holders to vote you in (just like Peltz couldn't), you could theoretically buy up over half of Disney stocks and thus, control the vote.
That would cost you over $110B... at least.
As you buy up those stocks the cost, tho, would continue to climb making it much more expensive than $110B. And you may have the big investment companies, like Vanguard, declining to sell their shares.
So... Elon's not going to be in control of Disney without mostly everyone wanting him to. And I don't think you'd find that mostly everyone would like Elon to be in control of Disney.