Hidden products are visible in the booking calendar

We can already hide certain products, which is useful for certain services that you don’t make available to everyone.
The problem is that on the booking page, the dropdown menu shows an overview of all available services—including the hidden products. Could we perhaps implement a check here where the system detects which products the customer owns and displays only those? (In principle, this would make the dropdown filter redundant and could even be removed entirely for customers.)