How do we deal with similar communities on different Lemmy instances? - Lemmy

Say what you will about reddit, at least an established subreddit was the place to gather on the topic, ie r/technology etc. With Lemmy, doesn’t it follow that similar communities on different instances will simply dilute the userbase, for example [email protected] and [email protected]. How do we best use lemmy as a (small c) community when a topic can be split amongst many (large C) Communities? This is an earnest question, in no way am I suggesting lemmy is inferior to reddit. I’m quite enjoying myself here.