And keep in mind that Elasticstack is great at ingesting data and VERY bad at updating it, so that's a primary limitation for any data set that needs anything more than trivial updates.
But as @warkolm mentions, the rest depends a lot on the data, how it would arrive, be queried, etc. You do see more 'big data' projects on Elasticsearch, especially with Machine Learning, scalability, etc. but also non-trivial to manage at scale (well, that's true of every large system).
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