part of the development we are envisioning that most countries will accept bitcoin as a form a payment in different sector. one can look way pass the truthfulness of the story but to the fact that the banks can suspend an account due to some reasons, like exceeding the limit of inflow of cash and the account needs to be upgraded or some suspicion of fraudulent activities, and many more. but it is the fact that almost everyone is looking forward to a time when bitcoin can be use for exchange for goods and services. and since it uses a decentralized system, i wouldn't know if there is a limit to bitcoin in ones wallet.