The trouble is that it does not illustrate the potential conflict of interest almost at all. As far as I can tell, Blockstream can only make money by acting in a consulting capacity to people who wish to make a sidechain.
A sidechain, since it is pegged to Bitcoin, cannot really make a lot of money unless the operator participates in fraud, and they would not be able to retain and share the loot with Blockstream because if Blockstream participated it would totally and instantaneously ruin their whole business model (as I understand/infer it.)
Sidechains themselves offer a new revenue stream to the Bitcoin ecosystem. Consider the discounts that vendors will offer for use of their branded gift cards and what-not. This demonstrates that there is money to be had there, and if the vendor could have their own currency rather than a piss-ant gift card or credit card that is much more powerful. With a robust two-way peg, Bitcoin value becomes equal to or (and) greater than the sum total of the value of all sidechains backed by it.
Last I heard, Blockstream plans to release at least their basic implementation framework as open-source for anyone to use. They could only remain competitive in the space if their implementation were better and/or more trusted than others. This might be one reason that they retained many of the most productive and well respected persons from the Bitcoin development community.
The small blocksize issue is something of a cart vs. horse thing. Since I became involved I saw the small data-rate and high latency aspects of Bitcoin as being key to it's robustness in the face of attacks (of the type we've not yet seen.) Were I a developer in the sphere I would have been putting a lot of focus on how to scale Bitcoin without losing this key aspect (and I have even while I've not worked on development.) I can easily see how the devs who are on 'my side' would be group under Blockstream because the focus is on security which happens to be associated with data rate. So, the 1MB thing was the 'cause' of Blockstream and not the 'effect' I guess one could say. I'm sure they find they, like everyone else, finds the limitation to be a regrettable nuisance. Unlike some others, however, they understand the ramifications. They probably just feel that the fairly cutting-edge crypto work that they are undertaking is the most productive and interesting way to deal with the reality without killing Bitcoin, and potentially lucrative as well.
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The graphic could also be improved by making a very large spill-way with several giant fish sucking up all the flow. They would be labeled Google, Facebook, etc. Also their should be cops riding on top of those fish labeled 'government regulators'.