Many software companies started in the last 3-4 years revolves around the blockchain. These were free to choose the best language suited to their use case. Many chose Rust, first released 7 years ago and started gaining momentum 3-4 years ago. It had good performance, fewer foot guns, good type system so it made sense for them.
Companies that started before Rust gained critical mass might already have significant investments in one language and don’t want to rewrite. This is the majority of companies. Let’s say GitHub won’t rewrite their main Ruby application, but if they were writing a new code search backend, they might choose to write that in Rust. The majority of GitHub devs would continue to write Ruby.
That means older companies (started before blockchain was hot) are going to skew towards older languages while newer companies are more likely to adopt newer tech.
Companies that started before Rust gained critical mass might already have significant investments in one language and don’t want to rewrite. This is the majority of companies. Let’s say GitHub won’t rewrite their main Ruby application, but if they were writing a new code search backend, they might choose to write that in Rust. The majority of GitHub devs would continue to write Ruby.
That means older companies (started before blockchain was hot) are going to skew towards older languages while newer companies are more likely to adopt newer tech.