1) Decentralization is always a good thing, I think that if a government embraces bitcoin or decentralized technologies (say, for example, for paying utility bills and the like), then it'll make it harder for themselves to steal from their constituents, so it's going to be a bit of a hard sell at first.
2) Businesses don't need to decentralize themselves, but can make use of decentralized infrastructures, say DeFi solutions for payment processing and stuff like that, it's definitely a net positive as a business owner.
3) this is heavily discussed in this platform, currently there are too many benefits to individuals, I can't even begin to fathom what the future holds for us.
4) It'll bring accountability forward, making their books transparent will increase the trust of the people on them and their accountability to the people will be easier to check. No random lobbying that can't be traced.