Why Google, Microsoft, Anthropic and OpenAI need their own AI detection tools

I'm not naive enough to think that these companies don't already have some internal detection tools, but they clearly are not being used enough. Lately researching anything using agents has been a pain (especially if the query leads up to buying intent) - the sources quoted are often AI slop, which are then used to deterministically argue a point. On the first challenge to logic, the reply is usually an apology followed by a tangential search and agreement on the user argued point - sometimes even a hedge. There is a simple problem embedded at the center of this, that at least partially explains this degradation - AI generated text. There is now arguably more AI generated text on the web than human writings, and platforms that used to be very credible (attracting high quality technical writers) now seem to be full of AI generated slop (someone has to call them out). It's a pattern I'm sure most people are noticing under the hood - query -> beautiful prose -> suspect sources. You challenge the answer, and all of a sudden it's a wildly different conclusion. To me that just sounds unreliable, because you could potentially argue with it to generate any conclusion you want - doesn't…