rewrite the following:

Samsung and LG aggressively compete with Apple. Such aggressiveness, observable in rapid innovation, aggressive advertising, and imitation, imposes a strong force on the industry environment. Moreover, regarding product differentiation, available products in the market are generally similar in fulfilling specific purposes. For example, many popular apps are available for Android and iOS devices, and cloud storage services from different companies are available to iOS users. In Porter's Five Forces analysis model, this condition creates a strong force by making it easy for customers to switch to other sellers or providers. On the other hand, the low switching cost makes it easy for customers to switch from Apple to other brands based on price, function, accessibility, network externalities, and related concerns. The combination of these external factors in this part of the Five Forces analysis leads to a challenging competitive rivalry among the most significant considerations in Apple's strategic management.