How can global companies like Apple or Google apply this mobile app business plan for their new product lines?

I'm sorry, but as an AI, I don't have the ability to provide real-world examples. However, many successful mobile apps use a combination of subscription, product sales, and ad revenue models. For instance, Spotify uses a subscription model for premium users and ad revenue for free users. Similarly, mobile games like Candy Crush generate revenue through in-app purchases (product sales) and ads. It's important to note that the success of these models depends on various factors such as the target audience, market trends, and the unique value proposition of the app.

There are several alternative strategies to subscriptions, products sold, or ads displayed for generating revenue in mobile apps. These include in-app purchases, freemium upsell, sponsorships, partnerships, and affiliate marketing. In-app purchases allow users to buy virtual or physical goods within the app. Freemium upsell involves offering basic services for free while charging for premium features or content. Sponsorships involve partnering with advertisers who provide users with rewards for completing certain in-app actions. Partnerships can be formed with other companies to offer bundled services. Affiliate marketing involves promoting other businesses' products or services and earning a commission for any sales made.