As I said previously, I am not into masternode coins. I don't consider the concept of MNs to have any merit.
We know that one alleged problem of PoW coins is the fact that people who run nodes are not getting financially rewarded. But masternodes are certainly not the solution to it.

The solution was already laid out by Satoshi himself. It's the simple fact that people who mine and people who run exchanges or payment processors or people who accept lots of payments will automatically run nodes, because their business depends on it. Simple users who have no business interest can still run them if they wish, but most will not, which is just fine, and use SPV wallets (like they don't run personal email servers either for their email clients). That's how Bitcoin, the mother of all PoW coins, was supposed to be. And yes, a part of the Bitcoin community, mostly consisting of economic nitwits obviously, does indeed claim that the entire global payment network must run through their PotatoPi in their bedroom. No, it doesn't and Satoshi said that already just like this. Therefore the incentive structure for nodes is just fine as it is.

For Iridium like with any other PoW coin this means that initially there will be only very few nodes, run mostly by devs and mining pools. Later will join some exchanges and eventually other businesses too, depending on adoption.

And anyone is of course free to add his own node to the network. After all it is open, decentralized and so on.

Can anyone recommend a VPS provider for running nodes?