Ok, I (and average Joe with me) can follow you there. But Why do we need 'coins' for that? Two years ago, bitcoin hit the news with pumps and dumps. Not a word about blockchain. Now blockchain hits the news as a technology but not a word about bitcoin (local media in my small European country). People can imagine the technology could be useful when everything is connected to the internet. But why the use of coins that are very unstable in price?? I see, among the numerous dapps proposed, an emailsystem. People don't want to pay for that!
And IF you need a certain amount of Lisk/btc/whatever-coin (now there's your Doge2

) an the coin is worth 1$ day one and 25$ day 30 then back to 3$ day 31, they don't buy it (in both ways)...
So: Tech: great great! blockchain, IoT: super but coins? Nah.... Just look at this or any thread of altcoins in the last years: 10% tech, 70% Moon, rockets get your engines started and 20% memes. Looks childish, shady, Ponzi and VERY VERY unstable.
I posted this remark in the NXT-thread when they started their trip to the moon(yey, I was there), in the NEM-thread (same thing) at the beginning:
Let's say the tech is superb AND the price is fixed at 0.10$ and it will NEVER change but the tech is AWESOME. How popular would these threads be?
You need coins because the only way to get rid of them as an anti-spam mechanism is to have a permissioned blockchain.
They need to be unstable in price because otherwise somebody needs to be in charge to tell everyone how much they are worth and to enforce that.
In other words, the answer to both these questions is decentralization.
I agree that its annoying when people are so obsessed with a quick buck and have no respect for the developers or the tech though.