You're right. The bigger boys are in various stages of getting it together, it's the ones that don't seem to have immediate column-inch impact (Oracle, SAP etc.) that aren't quite there yet, and then you've got everyone else who lack the resources or interest to pull it off.
An again economics is firmly in our corner here, since the effort to build exploits for exotic targets isn't that much less than the effort to target e.g. Android... but the incentive to build those exploits is far lower.
