If anything, it's an abandoned problem. A lot of companies bought really expensive enterprise search systems, which are sitting dormant because the results are so bad. With advances in spamming, internet/email search is getting to be a harder problem every year. I remember when Google was quite effective in finding what I need, but nowadays it's dismal. As an example, I googled for "storename return policy", and got…
Companies can have a great intranet search experience, but it requires time to properly configure the schema, train taxonomies, tune relevance, and understand the resources required to make it work quickly and reliably.
Document processing pipelines often require customization to meet the above requirements, and multi-lingual search may never be perfect within an organization due to differences in the way wordbreaking is done.
Some companies do put a lot of effort into doing this right and getting the best experience possible today, but most don't.