In terms of bitcoin we can have steady income in participating in signature campaign even it has little profit but it is stable and it will increase depending in your rank, while in fiat you can have stable income if you have a business which will gives you a stable income for a daily basis.
Business can give you stable income over a period of time once you get stabilize in it and initially it can also bring loss for you but if you manage it properly then you can expect steady income from it in future.