Phil Sim writes Poor web 2.0 fools:
The primary problem for all these Web 2.0 startups is many were built on the assumption that it would be easier for a Google, Yahoo or Microsoft to buy rather than build. But, as you can see from some of the details leaking out about Google Calendar and some of the other things there doing most of these new add-ons are highly integrated into their existing apps. Not meaning to say I told you so (okay, yes I am) but as I said in my GMail: One app to rule them all post, all of this stuff is going to work together and as such its far easier to build than buy.
In fact the only way most of the Web 2.0 companies have any value is if they have sticky user-bases. That’s why Flickr, delicious (I refuse to do the dot thing), etc were acquired. You can clone just about any of this stuff in a matter of months but you can’t clone tens of thousands of passionate users.
Great point about the sticky user-bases.