Call them "legacy apps" and run them over a compatibility layer. Hardware will gradually get good enough to run the old Java apps without hiccups, and the apps

Call them "legacy apps" and run them over a compatibility layer. Hardware will gradually get good enough to run the old Java apps without hiccups, and the apps that get translated to Go will run about as fast as the Java-Android versions [citation needed], but with oodles of memory to spare.