The work of this style is first to educate the targeted subsegment about how a general-purpose solution is not meeting their needs. You need proof points that show there is a clear gap in value between the general-purpose solution offered by the market leader and your more-purpose-built solution. You need to help the subsegment understand what’s in it for them if they do have those needs met. There should ideally be a way to quantify the value to them if they choose your solution over the market leader’s more generic solution.