Hadoop ≠ Hadoop distro. Hadoop is fine and healthy; what is in question is whether larger repackagings of it with other vendor-specific components is an interesting product any more.

Google's dataproc and Azure's HDInsight as well. The cloud players are swallowing whatever is left of the hadoop market.

EMR is their managed distro of Hadoop.

DataPipeline is their managed Hadoop for ETL.

Glue ETL is their managed Spark.

And it all absolutely counts towards the market.