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Web 2.0背后的一些企业家及资金提供者表示，尽管相关企业已经对网上行为产生了重大影响，但迄今为止，很多Web 2.0一代的互联网企业尚未能带来多少收入。

尽管Web 2.0企业用了4年多的时间来实验如何将社交网络、博客及其它“社交媒体”网站变成赚钱机器，但这些将用户产生内容(user-generated content)及交流奉为核心的网站，仍然继续着收益匮乏的状况。这方面的失败加上美国经济低迷及首次公开发行的短缺，打压了互联网创业圈内的情绪。

风险投资公司Battery Venture的合伙人罗杰•李(Roger Lee)表示，“在一两年之后，这个行业将面临调整，”很多Web 2.0企业都会消失。

网络浏览器公司Flock的首席执行官肖恩•哈丁(Shawn Hardin)表示：“当前的宏观经济状况颇具挑战性。”该公司上周获得了1500万美元的风险投资。
Many members of the Web 2.0 generation of internet companies have so far produced little in the way of revenue, despite bringing about some significant changes in online behaviour, according to some of the entrepreneurs and financiers behind the movement.

The shortage of revenue among social networks, blogs and other “social media” sites that put user-generated content and communications at their core has persisted despite more than four years of experimentation aimed at turning such sites into money-makers. Together with the US economic downturn and a shortage of initial public offerings, the failure has damped the mood in internet start-up circles.

“There is going to be a shake-out here in the next year or two” as many Web 2.0 companies disappear, said Roger Lee, a partner at Battery Ventures.

“These are challenging macro-economic conditions,” said Shawn Hardin, chief executive of Flock, a browser maker that raised $15m in venture capital last week.