Everything this coin makes unique is based on masternodes (IX, DS, ...). Enough masternodes are only running because people earn money with them. Intercept the enforcment for long enough and support abusive pools and you will see how far you will get with this centralized payment company. If you dont understand the risks of centralization you should stop posting on this thread and start reading some early documents of... well let's start with Satoshi? I'm not trolling here. It's a serious concern you should research.
Just like mining, a masternode is an incentivized investment which supports the network in a decentralized and distributed way.
As such, your statement could just as easily be made for bitcoin itself:
Everything Bitcoin makes unique is based on mining.... Enough miners are only running because people earn money with them...support abusive pools and you will see how far you will get with this centralized payment company.
You're not wrong in reminding everyone that anything which is designed to be decentralized and distributed gets more risky as a 51% majority is reached. It is just as true of Bitcoin as it is for Dash. However, the fact that Dash has
TWO distinct incentivised/decentralized systems working in tandem makes it much harder for any one entity to control the coin than a single-tiered system of just mining. So in fact, your concern is less true of Dash than any other coin.