Earlier quoted context omitted.
What would?
In the original comment you mentioned the open web put roadblocks in the way of progress due to idealism. So, if you could say what those roadblocks were, and how the idealism supported them ... Presumably you're not accusing "open web" activists of having ideals that favour inhibiting bandwidth, or hosting content on slow servers, so noting that proprietary ["closed"] services had those facets is irrelevant to your…
Flash made online video work. Facebook & YouTube made contributing & sharing content accessible. IRC, host-your-own webpages, later attempts like RSS and such, which were more idealistically "www" were also not right for Aunt May. They were right for 1990 users, who were a self-selected bunch.. not alway representative of the majority.
Even jewels like Wikipedia (a brilliant achievement of the www idealism, imo) are relatively inaccessible (the editting part) to the average person. That works very well for Wikipedia specifically.