Your user and value proposition are completely unfocused. You started with a B2C self-service app for frustrated shoppers, then pivoted to a B2B tool for salespeople, without a clear problem or customer for either. A product for everyone is a product for no one.
The problem you're solving is trivial. A salesperson walking a few meters to a computer is a minor inefficiency, not a business-critical failure. No store owner will pay to solve this. Your claim of losing '6 out of 10 clients' due to a 10-minute wait is not credible and shows a detachment from business reality.
Who is your actual customer, and what is the single, most expensive problem you are solving for them that they would happily pay to eliminate?
his is a solution in search of a problem. You have no data, no clear customer, and no unique insight. It's a feature, not a company, and it will be impossible to build a monopoly on something so generic and easily replicated.
There is zero potential for a monopoly. Any store could build this internally or just print price lists. There are no network effects, no proprietary technology, nothing.
The 'truth' you've identified is that waiting is inefficient. This is not a secret; it's a common observation. There is no contrarian thought here at all.
This is a marginal improvement on existing processes, not a new creation. You are digitizing a price check. That's a step from 1 to 1.01, not 0 to 1.