There are several potential Bitcoin businesses that I believe could greatly benefit the cryptocurrency space, and I have no doubt that innovative entrepreneurs will continue to emerge with new ideas and products. Here are a few examples off the top of my head:

1. Bitcoin-based microloans: There are many people in the world who do not have access to traditional financial instruments, but have skills or ideas that could lead to economic growth. A Bitcoin-based microloan business could connect lenders with borrowers without the need for a centralized intermediary.

2. Bitcoin-based remittance: The current fiat-based remittance industry is notoriously slow, expensive, and biased towards larger players. A decentralized, Bitcoin-based system could offer lower fees and greater speed and efficiency, offering real competition to traditional remittance companies.

3. Bitcoin-based prediction markets: The ability to bet on future events has long been a popular pastime, but current options are again centralized and frequently censored. A Bitcoin-based prediction market could enable the creation of truly uncensorable and unbiased betting options.

4. Bitcoin-based crowdfunding: Traditional crowdfunding platforms such as Kickstarter and GoFundMe rely on centralized intermediaries that can be resistant to certain projects or viewpoints. A Bitcoin-based crowdfunding platform could enable truly decentralized fundraising without any central authority.

These are just a few potential businesses that I think could exist and thrive in the Bitcoin ecosystem.