This strategy makes sense for a large TAM. But if you are attacking quite a small niche. You don’t want half your market on some grandfathered deal that doesn’t make any money. Maybe the niches I think about are too small.
For outsiders like me that didn’t understand this message at first glance, TAM means total addressable market. Basically the number of potential discrete customers of your product.
Learning that helped me understand this message and I think it’s a good point.