ZapThink just produced a good report on the state of Web 2.0 tools entitled "Evolution of the Rich Internet Applcation Market."
In the report, Jason Bloomberg and Ron Schmelzer of Zapthink highlight a critical gap in most RIA solutions: the inability to access data from within the UI. They then point to this as a major source of competitive advantage for Adobe:
"Adobe stands alone as the only vendor who offers a commercial, RIA-specific data access product."
It is probably not completely fair to expect Zapthink to include in last week's report a product that was released last week, this is exactly the problem that WaveMaker 5 solves with Enterprise-ready Data Widgets. In fact, the similarities between Adobe and WaveMaker's solutions is startling:
Comparison of RIA Data Frameworks
The Zapthink report concludes by saying that the most attractive market opportunity is not for stand-alone RIA libraries but for full RIA development enviroments like Adobe LiveCycle, Microsoft Silverlight and WaveMaker.