This isn’t done out of altruism.

I never said or even got close to claiming that it was.

But there is a distinct difference between Google taking a fragmented RCS implementation across carriers and manufacturers on Android devices, and providing a single universally supported option for Android (the operating system that they control, but don't prevent others from modifying heavily)... and Apple actively trying to avoid RCS support entirely in favor of their own proprietary system that does not support any products they don't make and sell directly. Verizon had their own RCS app on Android, and Samsung added RCS support to their Messaging app on their devices, among others prior to the Universal Profile and Google adding support directly in Android Messages. That's not something anyone can do or offer for iPhones other than Apple

Google worked to add support for essentially all Android customers. Apple decided none of their customers should be able to use RCS, whether they want to or not, simply because they had their own thing that only their customers could use and won't let anyone else use. You can't possibly be trying to claim that Apple is in any way a good guy here. Comparing the two directly here, Apple is clearly worse with no good reasoning for it, it is entirely for selfish reasons.