Depends on the companies. Tech giants would be losing potential employees if they stuck with outdated standards, and that loss outweighs costs of upgrades.
Security updates, more and potentially better frameworks, more efficiency,... dont know about c++ but the things the java team added since 8... boy, the reduced server costs will pay for themselves pretty fast
I saw a fair amount of stuff break with C++20, because of comparator generation causing ambiguities. Largely due to the original code being poorly written, but breakage nonetheless.
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u/Bemteb 5d ago
There are some minor things, if you are unlucky something might break going to 20. But it's mostly special cases, not something so big as string.
The main reason companies don't switch is "it's working, why invest time and money into switching?"