Most hotel booking software solves the wrong half of the problem
A booking engine converts a guest who has already chosen your property. A channel manager keeps inventory in sync across OTAs. Both are useful, and between them they cover the moment of transaction. Neither does anything about the enquiry that arrived at nine in the evening asking whether you have two rooms for the weekend of the fourteenth — which is where independent properties actually lose bookings.
That enquiry does not arrive through a booking engine. It arrives on WhatsApp, through the contact form, as an OTA message, or as a phone call answered by whoever was free. Each channel has a different inbox and a different owner, and none of them has a shared record of what is outstanding. The result is that a property can be busy, well-reviewed, competitively priced, and still lose a third of its enquiries to nothing more than a slow reply.