I don't know that this is the right way to frame the question, at least in my experience.
98% of making serious money in any business still has to do with good execution and process - it's ultimately about creating reusable business processes that can be replicated at decreasing marginal cost. That's going to be true whether you're a mattress store or a "next big thing" software concept startup. So, they have at least that in common.
Otherwise, more generally, there's the kind of banality you ascribe to bars, restaurants, movie theaters, etc. in every business, even a technology startup--and lots of it. If you're doing something you genuinely enjoy, that just means you're lucky enough that your drudgery/fun mix is something like 90%/10%, instead of the 98%/2% that applies to people who claim to outright to hate their work.
At the same time, there's both room and ample incentive for differentiation through aggressive innovation and novel concepts in these types of everyday businesses, too. So, just because they aren't hot Silicon Valley startups doesn't mean they neither benefit from nor require the same kinds of marketing, branding, advertising, sales cycle and operational challenges.