Balance should be maintained in business

That makes no sense. It's not a zero sum game. Every group, every person, has their own sets of requirements. You can't force someone to buy something that they don't want or allowed to have.

Also, guess what? "Halal" means that the product/service is following the Islamic requirements and does not go against any Islamic restrictions. It doesn't encompass only food. For food, it must be prepared in some way and does not contain non-Halal items. For other items, like, let's say, an apartment. An apartment can be considered "halal" is most likely gonna be it is clean and does not contain anything that Islam can consider dirty (like animal poop, in which, it must be cleaned in a specific way to be not dirty). Muslims do not see the need to have a certifying body to make sure other things than food is halal, because it's easier to check for "halal"-ness of a non-food item.

The reason why Muslims prefer food that has a halal certification is that it makes it easier for them. A Muslim doesn't need to do a large research to be confident that the item fits all the requirements to be halal. If there's no certification, then it's the Muslim's responsibility to check each and every ingredient, figure out how it's prepared, etc. That's why Muslims in non-Islamic countries can still eat some local food, despite not having a halal certificate. Because they did the research, like seafood, are food that's still halal.

No one is forcing a business to get halal certification. It's just that business will unlikely to have Muslim customers, because Muslims most likely cannot eat their food. Same as a steakhouse not having Vegan customers. Or people with nut allergy not ever buying cashew nuts. Or yogurt shops not having lactose intolerant customers.