I like quantifying companies in three stages - stage 1 (pre-product market fit), stage 2 (post-product market fit, growth stage), and stage 3 (mature companies like FANGs). Do note that in a big company like one of the FANGs, you will find products that are in stage 1, stage 2, or stage 3. From Google cloud/Azure to small companies like Narmi, a lot of companies are capitalizing and building products for other businesses.