For several years it seemed like deficiencies of older ecosystems will usher new takes: #rust fixing #cpp, #kotlin fixing #java, #julia fixing #python, #wasm fixing #javascript etc.
But it no longer feels so. Maybe it was a case of "you have to move fast to fix things" and as incumbents raise their game the window of opportunity closes. The vast investment in established stacks incentivises patching the most egregious weaknesses.
One exception seems #golang, which found a network niche