Apparently it is not necessary for "miners" to have insider information about blockchains they "mine" for, "mining" is a commodity that can be separated from the details/internals of blockchains by "black box" pools.
Basically a pool can hire miners, paying them in whatever currency miners choose to accept.
So for "mining" companies, a proliferation of blockchains should be a good thing, helping free them from "dependence" upon any one specific blockchain-based currency or application.
With "mining" in place like that as a "commodity", available to anyone who wishes to process a blockchain for any purpose, people interested in different ways of distributing digital coins/tokens can maybe separate themselves initially from the perceived-by-some "problem" of allowing any tom dick or harry to mint the coins. The coins can be distributed first and then once all of them (o any chosen number of them) have been issued the possibility of opening up the network can be revisited.
Such an approach allows coins to be issued with goods they can buy already in place, because it allows issuing of coins to be correlated with provision of goods for those coins to buy. The providers of the goods no longer have to worry that more coins might be issued than there are goods waiting to be bought.
For example a "General Mining Corp" can issue its own GMC coinage to people who deposit resources and redeem those same coins for almost that amount of resources (that amount minus operating costs of operating the storage / transaction / trading / delivery system).
By making an online game accessible to pretty much anyone with a browser, anyone can build "resource" collection or mining or synthesis facilities to obtain "resources" to sell for such coins, and by means of "merely a bunch of games" distribution of coins can take place in an open market that values not only currency inputs (people who want to buy World of Bitcurrency coins or facilities or characters or whatever) but also human time (people who actually play the games, creating virtual world scenarios and events and economies and markets and so on by their activities).
In some number of years anyone who does in fact prefer to get their coins "free" simply by puttering around at their computer playing games burning up hours they maybe cannot do not or have no desire to "sell" in other markets can have coins, distributed in a way that is based on human input and time and playing skills instead of GPU cycles.
At any time that it seems worthwhile to weigh it down with the cost of "hiring" GPU farms to "secure" the network, block box pools can be used to hire however much GPU power seems worth the cost of paying for it.
Each and every player can issued their own coinage if they wish, competing on the markets with any other coinages on the markets.
It might well turn out that many coinages will not consider the cost of employing GPU farms worthwhile until/unless trade values of trade in their coinage exceeds, in various negotiable valuables, the cost of getting into GPU-power-wars or simply the cost quoted by their local GPU farm for jacking up the difficulty of their blockchain.
(Many might even ask why jack up the difficulty at all? Just how much overhead cost *is* there in opening up one's currency to the pseudonymous public to fight GPU-power-wars with?)
-MarkM- (Build your virtual resource mines free at http://galaxies.mygamesonline.org/