Exactly my own experience as well. When I started out on Medium a few months ago, I was worried about 'using up all my good ideas' all at once and not having a big enough audience for them. Now, I realise that most of the time nobody really cares, and if you're on to something good, there's always going to be a bigger audience for you to tell that story to in a slightly different way. It's what standup comics do all the time when they're developing their material.