Remember not to quantify your assertions because people might then make their own minds up.
Dash's marketcap is currently 0.3% of bitcoin's. Just under 3 thousandths of the price of bitcoin.
Lets look at what's on offer (either currently or on roadmap) for that 3 thousandths of the cost of bitcoin. Namely an asset that is:
[1] - largely bitcoin compatible in terms of wallet technology, network interfaces, compatibility with open source extensions etc
[2] - inherits at least bitcoin's level of transparency and public-blockchain accountability
[2] - supports instant transactions natively, without recourse to third party payment channels
[3] - supports mass-adoption capacity scaling requirements natively without recourse to third party payment channels
[4] - supports natively enhanced coin supply mixing to finally push the currency to full fungibility without recourse to loss of transparency
[5] - decentralises the governance of blockchain maintenance and development to eliminate consensus deadlocks amongst developers
Again. Remember not to qualify your assertions with historical anecdotes, evidence or empirical reasoning since that might mitigate the impact of your nonsense.
First of all, other coins are not doing what Dash is doing, nowhere near it. The reason being that original work in progress is not as copy-and-pasteable as a static precedent. It's not enough just to copy the code - you'd need to copy the originator as well to know what to do next with it.
Secondly, the assertion that "investors go there instead" is a bit of bluster you've added to pad out your post and it is simply not true. Originals retain their lead even when they're not technically ahead, never mind when they are. For example NxT is one of the most slammed currencies in existence for its small original distribution. It's also been superseded in some areas by clones but none of them got near its marketcap. Same goes for Peercoin and its clones, Blackcoin and its clones (Cinni), even Bytecoin and its and ultimately - Bitcoin it's very self.
In fact this very discussion is a good rehearsal for when the general public discover bitcoin en-masse. Why don't you try out your arguments on them and see if they don't think it's "perfectly distributed", "fairly launched" and not "in the hands of a few early adopters".