Any business that’s online and has a product or service to sell should have a Sales Funnel.
It doesn’t matter about the industry/niche you’re in, how obscure your target audience is, or whether your product is online or offline.
You don’t even need anything to actually sell within the Sales Funnel.
They can be positioned to “sell” leads, physical or telephone appointments with you if you’re a coach or consultant.
You can then go on to sell them like you usually would and get a brand new customer in your door!