I'll bite. I've been writing music for decades but I can't sing. With ai I can write lyrics and generate ai vocals, then separate the stems and extract the vocals throwing away the rest. Add the vocals to my daw and create the rest the way I want. Saying its a great work of art is subjective, but for me I can make music I couldn't before now.

Exactly. What service got better and/or cheaper?

So this is the classic tension between the "coding for the love of code" vs the "coding to solve problems" mindset. This cultural concept has been around since before AI was on the scene, heck well before software existed (craftsman vs builder).