Select Pokémon GO users looking for refunds after update blocks jailbroken/rooted phones

Some Pokémon GO users are quite angry with Niantic after the latest update to the game has blocked jailbroken/rooted phones. There are players that have spent money on the game, but now that jailbroken devices are blocked from game access, they can't use the funds they spent. This has lead to those customers asking for refunds of their in-game spending.

It's a tricky spot to be in. Do Pokémon GO customers playing on jailbroken devices deserve refunds now that they've been blocked from the game? Is this a risk they took the moment they decided to play on a jailbroken device?