The reason why the comment is insightful is that suddenly Erlang has found itself in the crosshairs of an industry that it is particularly useful for (ad-tech) but there are <i>many</i> more applications that have nothing to do with adtech which erlang is <i>also</i> very well suited for. So for adtech to start pushing the direction in which erlang&#x2F;mnesia evolve would be wrong.<p>As for the drop in $&#x2F;TB of storage, that drop has been steadily going on since the 70&#x27;s of the previous century and for a very large chunk of that period Erlang&#x2F;mnesia have been adapting bit by bit to take advantage of that price-decrease.<p>Persistence of time series and event type data does not (usually) require the kind of storage solution that mnesia offers, a much simpler storage medium would probably suffice and&#x2F;or be a better choice for that application anyway, storing such data without further processing in a relational database is a bit of a cop-out.<p>Most of those applications could benefit from digesting and compression which is something you&#x27;re not going to easily retro-fit onto an existing database.