The T800 was a competitive CPU, more-or-less, although it was always odd when compared to the mainstream processors of the day. The fact that it didn't easily

The T800 was a competitive CPU, more-or-less, although it was always odd when compared to the mainstream processors of the day. The fact that it didn't easily support C, Pascal, or even BASIC (in the early stages) meant that it was slow to get support for familiar applications. OCCAM was lovely, in an academic sense, but it was effectively a different evolutionary branch of computing. That branch has perhaps more influence today than ever, with Go's use of CSP-like channels, but OCCAM never really took off. Inmos sold TDS (the IDE/SDK) for a lot of money just when Open Source was really starting to kick off. The folding editor, while it had its good points, was also strange from a mainstream point of view, adding to the barrier to entry. By the time you could get common languages able to compile for the Transputer, the T425/T800 were outpaced by the rest of the industry, and the T9000 only really approached being available as Inmos collapsed. And by that time, it was already obsolete anyway. But XMOS has done fairly well, albeit in a limited niche.