Why has Apple and other cell phone makers & providers done so little to protect against spam?

I’ve been interested in how generative AI’s handle various questions. So I put your statement into Perplexity (a TidBITS Talk-designated “answer engine ”). How do you rate its answer?

https://www.perplexity.ai/search/have-phone-companies-taken-bri-6zRgx1dXQ6eQbkm.FtuDaw