[binarymax]

Lots of reasons:

1) switching search engines is hard when you’ve built your information needs around one. I’ve led lots of search engine migrations and they’re not fun. I even gave a talk on the problems companies face when doing so. https://haystackconf.com/us2020/search-migration-circus/

2) lots of the new search startups don’t offer full feature coverage. So just because a company is the new hotness it doesn’t mean it can fill the need of someone entrenched in Solr/elastic

3) why risk going to a startup when they haven’t proven they’ll be around in 3 to 5 years?

4) incumbent search engines eventually catch up at the speed of the enterprise market. Why spend a year migrating when the engine your using will implement the feature for you within that timeframe?