In retail, Walmart, Target and most mainstream supermarkets have changed very little.
I think you mean to ask what tech company startup has ever remained relevant for so long without change, maybe?
Not to disagree with you, was more an interesting thing of note for me. I didn't really picture Walmart doing this sort of stuff outside a huge IBM or Oracle contract. Retailers of that scale have all sorts of potential improvements to make from the growth of technology from online to mobile to IoT (maybe) to big data analytics on purchase/loyalty schemes.
[1]: http://www.zdnet.com/article/walmart-relies-on-openstack/
I think that's a bit hyperbolic.
But, that being said, it annoys me that they haven't even put enough effort into this change to update the documentation.
> Note that the current best definition of the algorithm for counting characters on Twitter is described in the page on the twitter-text Tweet parsing library. This documentation will be refreshed shortly to reflect the most recent changes.
https://developer.twitter.com/en/docs/basics/counting-charac...