Database lockin. Guess that was not clear enough.

FWIW, CRDB should be a good fit for people worried about database lock-in. You'd only be "locked in" if you discover that we're much better than the alternatives :) CRDB uses the standard SQL language. Also, CRDB speaks the PostgreSQL wire protocol; for using CRDB you'd be using the Postgres drivers for different languages. So, more or less, any application that can work with us should also work with Postgres (and vice versa). Moreover, the Postgres drivers generally respect other higher interfaces (odbc, jdbc) so, more or less, a CRDB application should also work with any other established SQL database (and vice versa). CRDB can also export your data in formats easily importable by other SQL databases.

In theory the OSS-nature of CockroachDB helps with that part.