Yes, ham radio has sufficient throughout for Bitcoin because very few people actually transact on the blockchain. If people actually ever used Bitcoin, ham radio would be useless.
Well ham radio operation, in the USA at least, requires a license. Are you proposing that everyone get ham-radio-licensed as a prerequisite to participating in the new economy?
You also can't use it for anything you have a "pecuniary interest" in. Most agree that means any commercial transactions are not allowed (with the exception of selling radio equipment to other ham radio licensees).