Re: How can this "Markablejones" be so ill informed
First, on network management, while the GOAL isn't to prevent reasonable network management, in many cases it is an unattended side effect - stripping QOS so that SIP and HTTP traffic run at the same priority across peering points.
Lets look at your statement "ISPs will be incentivized to not upgrade their networks in order to sell priority delivery" and compare that to past actions.
Without "Net Neutrality" laws ISP's had the ability, and did, sell "fast lanes". Thus, if your argument held true, ISPs never upgraded their networks and we are all still on dialup. or ISDN, or 256K DSL, or... well, the point is that ISP networks are in a constant state of upgrade, and they did it even with fast lanes in existence. In fact, the extra money from those "fast lanes" may have actually helped drive those capital improvements.
Now, lets look at the second half of your argument, "The higher the price, the more easy it is for company's like Google and Netflix and Amazon to set barriers to market entry that price potential competitors out of the market".
Amazon and Google already paid high prices for entry - what you are suggesting is that others should not have to pay because Amazon and Google already have. Nonetheless, lets take that part at face value and look at the rest -- if there is that much money to be made selling "fast lanes", then additional companies (ie, ISPs) will be formed to take that money, increasing competition and driving down consumer costs.
Giddes may or may not be a shill - I don't know - but his arguments are just as valid, if not more so, than yours - and he at least signs his name to them.