I can confidently predict that both Go and Rust will be seen as the "old brown stuff" in not so many years and some hot new thing will have come along that everyone wants to build in.
Rust's main claim to fame - safe manual memory - is already being re-examined. There is definitely interest in and pursuit of a lower-boilerplate means of getting the same, and there are some candidates out there already.
Further, a language being successfully used by experts and popularized tends to precede an accumulation of low quality contributions that negate base improvements to maintenance. In due course, a popular Rust will become "enterprised" with an accretion of tooling and frameworks - although it might not look the same as "enterprise Java", it will have the same kinds of effects in creating barriers to entry and sucking the sense of "fun" out of the day-to-day workflow.
Lastly, the application categories will change. There will be demand for "glue" again, applications that are just frontends to library code(perhaps code written in Go or Rust). The new language will be something not systems-focused, and perhaps aim to be mostly focused on content and presentation (as HTML was in inception).
Rust's main claim to fame - safe manual memory - is already being re-examined. There is definitely interest in and pursuit of a lower-boilerplate means of getting the same, and there are some candidates out there already.
Further, a language being successfully used by experts and popularized tends to precede an accumulation of low quality contributions that negate base improvements to maintenance. In due course, a popular Rust will become "enterprised" with an accretion of tooling and frameworks - although it might not look the same as "enterprise Java", it will have the same kinds of effects in creating barriers to entry and sucking the sense of "fun" out of the day-to-day workflow.
Lastly, the application categories will change. There will be demand for "glue" again, applications that are just frontends to library code(perhaps code written in Go or Rust). The new language will be something not systems-focused, and perhaps aim to be mostly focused on content and presentation (as HTML was in inception).