Here's this Sunday's joke:
Gary: Our website launch was a disaster! Why didn't anyone catch these accessibility issues?
Sarah: We did, but you said to fix them "later."
Gary: Well, we've learned our lesson. What should we do differently next time?
Sarah: Maybe actually implement accessibility fixes when we find them?
Gary: Brilliant! I'll add that to our "Lessons Learned" slide deck and look at it later together!
I've seen lots of organisations claim to have "learned their lesson," only to realise how they pay lip service to accessibility, without following through. Not to mention that accessibility should be a fundamental aspect of product design, not an afterthought that you can consider later.
Don't let accessibility become one of the things you know you should do but won't.