Bandwidth and latency. Bandwidth and latency are not as big a problem as they were just a couple of years ago.
However, noted the Gartner Group's Fenn, the adoption of online 3D technology has been slowed because many consumers who might want to view data-intensive 3D content still have slower analog modems, which increase download times.
Nonetheless, over time, said Forrester's Schwartz, "The latency issue will be moot as more people get cable modems and have access to DSL [digital-subscriber-line technology], and as smarter 3D technology begins taking advantage of more clever algorithms that better simplify objects."
Content authoring costs. In general, the industry has not developed substantial reusable object libraries for authoring 3D content. The inability to reuse objects adds cost to the development process.
"People in the industry talk about a digital back lot like you have in the film industry," Schwartz said. "But the notion of having reusable assets in a similar vein is still in its infancy."