It's an interesting observation. SAP has opened up some of their offerings (like OpenUI5) but there's been very little buy-in. Perhaps it's also partly due to the earlier comments from then-SAP CTO Shai Agassi claiming that open source stimulates innovation? Maybe it's because the products aren't great (I'm no fan of UI5).
FWIW, I'm a massive HANA skeptic - I think it's overpriced and SAP betting the farm on it a few years ago wasn't necessarily the best option. It's a product that was put together from various disparate components - TREX, P*TIME (from Transact in Memory), etc - and that shows. It hangs together like something made of brown paper and string, with so many tuneables it puts Oracle to shame.
FWIW, I'm a massive HANA skeptic - I think it's overpriced and SAP betting the farm on it a few years ago wasn't necessarily the best option. It's a product that was put together from various disparate components - TREX, P*TIME (from Transact in Memory), etc - and that shows. It hangs together like something made of brown paper and string, with so many tuneables it puts Oracle to shame.