I know you're not just trolling, because you contribute many insightful comments on HN, but I just don't see why you are so focused on headcount as the measure of business growth.

The low marginal cost of additional customers in a subscription software business makes your argument an apples-to-oranges comparison. You might need to hire additional staff to manage and maintain a growing portfolio of rental properties, but with subscription software you only have to improve your CRM tools and development processes to maintain a growing customer base with near-constant headcount. If better CRM tools happens to be what you are selling anyway, there's a pretty obvious multiplier for growing profits with very low headcount growth.