'30 rental processing systems' interesting opportunity. the airbnb / squarespace rental ecosystem has a bunch of standards for syncing bookings, but I think they mostly amount to exchanging ical files. would be neat to develop a modern open protocol for inventory + then develop a hosting business around it -- applications in cars, retail (like that 'pointy' company google bought), sharing economy
like IBM is doing this now, zero chance their system is usable https://www.ibm.com/docs/en/inventory-visibility?topic=data-...
or this mckinsey whitepaper that's clearly not a thing you can use without a bespoke contract https://www.mckinsey.com/~/media/McKinsey/Industries/Retail/...