In addition to these theories, I would also guess that developers have realized that Twitter could simply replicate their feature sets and make their client/service the default choice. This is of course, Twitter’s prerogative, and is also the risk developers undertake when building for a platform they don’t control.
I have no doubt that Twitter wants an ecosystem to thrive around its platform, much in the same way that Facebook wants an ecosystem around its social network. However, as I wrote all the way back in July of 2008, VCs must wise up to the fact that investing in accessories that can be reproduced and easily packaged as part of a core offering may not be the best business strategy.
This is the pointless, rambling blog of a technology consultant, emerging technologies geek, SOA, cloud software & systems architect, as well as a Microsoft Certified Technology Specialist: .NET 4.0 Service Communication Apps (WCF). ***Nothing expressed on this blog represents the implied or explicit opinion, stance or view of any of my employers or clients, past or present.***