The leading producer of cell phone backup batteries, Progyny…

The leаding prоducer оf cell phоne bаckup bаtteries, Progyny, has achieved great success because it produces high-quality battery backups that are not too expensive. Even so, another company that produces lower-quality batteries at the same price has also achieved some success, but not as much as Progyny. Also, in general, the price of backup batteries has declined because of economies of scale and learning. In addition, Progyny has added complementary assets, such as a carrying case. Considering all of these factors, the backup battery industry is most likely in the________ stage.