Dish Network acquired Boost Mobile from T-Mobile in July 2020 and immediately started deconstructing the Prepaid carrier's strong brand value proposition (i.e., removing popular features & functionalty, imposing strict data throttling, imposing extra charges, etc. - source: Boost Mobile website & customer communications and various telecom industry publications) in the name of saving money. That effort was ENTIRELY driven by the Dish executives (AKA, Dish leadership).
Consequently, Boost Mobile has consistently and continually lost residential customers at a high rate (>1.5M - source: Dish Network YE22 Financial Results) in the nearly 3 years since it was 'hijacked' by Dish. In 2022 alone, Boost's customer base shrank 6.7% (ending the year at less than 8M subscribers per Dish YE22 Results). Just released 1Q23 Boost results showed continuing customer base erosion to 7.91m retail wireless subscribers, down 81,000.
Basically Dish Management applied their failing Satellite TV business model (i.e., 'wring' cash out of a declining base) to Boost Mobile and are driving a once strong wireless brand into the ground. It's highly likely given their previous track record that Dish's foray into the Postpaid market with Boost Infinite will be met with similarly abysmal results as the company seemingly continues to move ever closer to their inevitable bankruptcy (and/or a wholesale asset sale).
https://about.dish.com/2023-02-23-DISH-Network-Reports-Fourth-Quarter,-Year-end-2022-Financial-Results
https://ir.dish.com/news-releases/news-release-details/dish-network-reports-first-quarter-2023-financial-results