Actually, since people like us are the ones who regular people come to for advice about these things, the opposite would be true. So if the minority have influence on the majority, it can backfire on them.
Please tell me, how many companies, not just in mobile but anywhere, have this kind of transparency like you're looking for? Computer companies, car companies, recording artists, etc., all of these companies and people are if anything the opposite of transparent. They don't owe it to us, and just because they would be transparent doesn't mean that we'd necessarily go with their product. But the downsides are greater than the potential upsides, at least for the companies. Say someone decides to go with another product after seeing some pre release info, even though that device may nor be finished. Or someone decides that with all the issues they're having getting an update out, that they should go with someone else.
I agree it would be nicer for us if they would let us in on what they're doing, but we're paying for a product, not a backstage pass to what they're up to. None of these companies are any different, and I don't get why people think they are owed this or that we should expect this from any company. The only people who should be the ones on the companies board or maybe if they're shareholders. We are also not guaranteed anything beyond what we paid for when we bought the item, any repairs and support during the warranty period, and software updates aren't actually included in that. They aren't guaranteed, but obviously companies don't want to abandon a device right off the bat, as it could affect future sales. But they have stated what devices are getting the update, and they have stated that the Turbo will go straight to 5.1. That's more than they are required to do.