Not the parent but one imagines that WASM could be a good target for decompressing or otherwise decoding less-adopted formats/protocols because WASM
is fairly broadly-adopted and seems to be at least holding steady if not growing as an executable format: it seems unlikely that WASM disappears in the foreseeable future.
Truly standard ANSI C along with a number of other implementation strategies (LLVM IR seems unlikely to be going anywhere) seem just as durable as WASM if not more, but there are applications where you might not want to need a C toolchain and WASM can be a fit there.
One example is IIUC some of the blockchain folks use WASM to do simultaneous rollout of iterations to consensus logic in distributed systems: everyone has to upgrade at the same time to stay part of the network.
