There is no such thing as a "low collateral node", an invented term because now there is one which is more expensive. Nor has any node collateral requirement declined inline with dash inflation, thus dash for dash, more expensive.Poppycock! The network still support low collateral nodes and last I checked you can pick one up for a little over 1 Bitcoin or $36k USD.; Cheap!
To participate as a HCMN, there are no options at the same price as an original dash node. Shared masternodes is not a comparison as you don't get to choose the server spec and location, thus could not be described as organically decentralized.
What happened was, new functionality - which can only be achieved with a new node type - were introduced. This in itself is the thin wedge to divide and conquer by marginalizing the original nodes. I suppose it might be loosely like introducing a co-existing mining algo (like digibyte) but forcing the new algo to use more energy / returns... big toys for big boys... until yet new functionality with higher collateral comes along and that too marginalizes the HCMNs.