More than half of Amazon's sales come from third-party merchants who this year started paying an average of over 50% commission on every sale, up from 35.2% in 2016, the result of it raising Fulfillment by Amazon fees every year and increasing storage fees.
While paying for Amazon's logistics and advertising services is optional, most merchants consider these, especially advertising, a necessary part of doing business. Moreover, the FTC has reportedly amassed evidence that Amazon disadvantages merchants who don't use the services by giving them lower placements.
Capitalism at its finest... I still remember when Amazon was just a humble online bookstore. How times have changed.
And an alternate email service like ProtonMail.
They also have ProtonDrive as an alternative to Google Drive. Apple's iCloud is also end-to-end encrypted now. pCloud is another popular option. There are a number of choices for secure cloud storage these days.
Web search is a bit more difficult. DuckDuckGo is heavily integrated with Bing. Brave Search is hit-or-miss. Yahoo is just a front-end for Bing.
If you need live document collaboration, you're probably already in a setting where either Sharepoint or GSuite are mandated. If you're not, BitAI may be worth looking into.