@johnarb, I do understand the incentive part of running a blockchain... but I'm saying you don't need bitcoin itself for it... you can run other incentives.
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It's just a tool.....
Apologies for cutting parts of your post. I'm only discussing the part of the blockchain that needs a currency/incentive for the network to function. When bitcoin first started, no one was mining, which is why it's estimated Satoshi owns about 1M bitcoins worth over $6B currently as he was the only miner. Some of the earlier blocks you can see there were gaps, I think over 1 day or 2 days, this is because there was no miner to solve the block. Bitcoin had no value and was given away freely to anyone who wanted it.
The point is this, the bitcoin network, the protocol, the software, the network, each part of it operates on game theory principles in order to have a trustless and decentralized system.
That is why the miner gets rewarded the "coins" automatically for solving the block. This is not done by a central server but by the bitcoin network utilizing a consensus mechanism built-in to the protocol.
I read somewhere that IBM is going to come out with a blockchain and I posted about the banks coming out with a blockchain for their interbank electronic transfers, and also read about Russia (and maybe another country) that will issue a cryptocurrency. I'm awaiting on these things. You see, when they come out with these blockchains, they will need to actually validate the blocks with hashes, and certainly they can throw millions of $ to have hundreds or even thousands of servers but in the end, they will have a centralized and trusted system. If it's centralized and trust is required, then you don't need a blockchain. You can run a database, same ones they have now. Oracle makes a good off the shelf one. Do you see where I'm going with this?