Well, It is not Lucene alone, there are many tools in java written around Lucene such as ElasticSearch/Solr/Elassandra and so on, so no language or runtime can replace everything. Eventually something might catch-up. That is why it is not language alone! It is developer, runtime, ecosystem and problem domain, brainshare.
Most of the tier-1 cities has direct international or national airways connectivity.
Tier-3 cities may not even have a single factory, it is hub for 100s villages, has decent bus-connectivity to nearest tier-2 city.