His offer is likely to have to be accepted, given the premium, though it may get pushed higher.
He'll need to fund it, but it's likely that banks will lend him the dough...but he'll need to pledge his other securities in order to do so....and it's not that likely that Twitter's cash flow will be able to support the debt payments.
It's a false presumption that it will increase revenue to allow Alex Jones and Donald Trump and Vlad Putin or whoever on the platform, in a "free speech" excuse, any false propaganda or false advertising goes, regardless of how harmful, nothing to be banned....nope, not gonna increase revenue.(or even usage)
All that will do is force governments all over the world to step in to regulate. It's not as if Twitter will be allowed to operate entirely freely in Russia, China, Iran...and the EU and US will be forced to follow suit as well...meaning that, here in the US, Section 230 will be over. Meaning that the major platforms will now be directly liable for the harm their user's posts create. Huge liabilities, endless liabilities.
He could drastically cut expenses, but that could well mean the company's death spiral.
My own hunch is that he'll ultimately balk...but it's sure to be interesting.