The reason for Acme's use is two fold: First the name has a meaning of "peak or pinnacle of achievement" which is good for any standard, but also happens to be perfect for the obsolete search algorithm of "phone books." Back in the day before the internet was accessible to the general public on their phones, the phone book (specifically the Yellow Pages, so named because, well, the pages were yellow) were arranged alphabetically by service provided, then alphabetically again by business name. Acme was a popular name for a company because not only did it have a meaning of superiority, but given the AC letter combination, it was almost always going to be the first company listed in a phone book. Didn't matter if you were Acme Plumbing, Acme Grocery, or Acme Road Runner Hunting Equipment. You would likely be the first company that people saw when they flipped open the book to look for whatever you were offering.
Acme isn't the only name used for this, nor does it have to be an AC letter combination. Disney shorts had their own "order anything" company in the form of Ajax, which had similar meaning and similar front page of the phonebook. It did differ in that it was never presented as a single company like Looney Tune's Acme morphed into being, as Mickey's various start ups of the short would often be named Ajax as well. If you want this "front of the phone book style" the "Ace [insert industry jargon here] Company/Corp/Inc" would fit the bill and have the double benefit of not being the silly Acme Company as people know it today. Generally, the meaning of the word was less important than the name and some real life companies were named for Phone Book search optimization. I had a family friend that ran the very successful "Apple Plumbing" and of course my phone comes from "Apple Computers" and what does Apple have to do with clogged sinks and computers? Nothing but being on the first page of the phonebook for those services.
A "modern" gag take would be a company named solely to comply with Search Engine Optimization (SEO) so that when you google its industry, it pops up as on the first page (more so than the phone book, it's common knowledge that if you're not in the top five results for a google search, you're not gonna be seen at all).
The Looney Tunes cartoon Acme Corp was actually mocking both this trend and the "Sears Magazine" which was THE shopping for specialized products product for almost 100 years of American industry. You could buy a prefabbed house from Sears Magazine (some assembly required, batteries not included) and cars! While the higher-end stuff did cease in the 1890s following an economic recession, the Sears Magazine still went with and the company opened physical department stores across the nation with a selection of their at times 523 page magazine's popular offerings. The cartoon ACME (which the animators gave said was an acronym for American Corporation Makes Everything... because half the memorable gag of Acme products was "Acme" was not the most apt adjective for their shoddy work) was spoofing the sheer variety of Sears and similar products. Today, the closest thing we have to Sears Magazine would be Amazon; however, they don't have much in the way of the Amazon logo slapped on all of their available products.
A modern trend to the ACME [product] would be the Apple computer naming conventions of a lowercase "i" prefixed to the product (iPhone, iPad, iMac) so perhaps the modern Coyote has an app on his aPhone brand phone to swipe right on road runners he wishes to eat?
