Hi! Serious question: can you explain more about what you mean here? I'm having trouble imagining what "development platform" means here, or how/why a division would use Ethereum as one. I'm guessing you mean something other than software development?
Sadly, the whole dApp ecosystem is flooded with initiatives that in practice would run better, and more efficiently outside the EVM. By this I mean the costs of running the contract on the blockchain do not really scale up to the benefits of running it in a decentralized, trustless context.
So your instinct, that it is not advantageous to run applications on the EVM is in fact correct in most of the use-cases I've seen so far (cough cryptokitties)
They wrote up a blog post about some practical use cases for it: https://www.blogs.conduent.com/2017/12/05/the-possibilities-...
As for the rest, most of those just raised their money in the past year or two and haven't had a chance to actually build their platform yet (if they're ever going to, I have a feeling a bunch of them are going to end up being vaporware).