It's curious
«Corporate education market is on its rise, with an estimated minimum of $35 billion in yearly revenues in digital tools».
Ok, this market is full of players with their products and customers. So why do you expect them to be ready to share costs and their wide part of pie with global platform? What will be profit for them
Because market is so fragmented - it is extremely difficult to chose a product to meet your requirements. Even common taxonomy does not exist. So, if you look for 'Sales negotiation' - you will get ton of results, but each one will teach different things and most sites don't even allow for a demo of a product, requiring you to set up a demo call.