I hope the open source models / crowdsourced approaches to training will also be an important part of the ecosystem, keeping it honest and providing an exit. Similarly, as it does for operating systems and other important software.

But I don't see a trend of big companies really opening up. They usually open only if it benefits them (which can also happen and did happen in various scenarios). Everybody is accepting and open when it's trying to grow and is closing once it can reach a monopoly.