You don't have to be on the latest and greatest node to have a viable IT infrastructure for industry. For that matter, the vast majority of data center servers in use are not even on 7nm, they're using 14nm class chips. These things don't just disappear when a new node starts up.
In fact, 7nm class server chips really didn't hit data centers much until ~2021. I know we just upgraded some VM infrastructure in 2023, brand new systems, using Ice Lake-SP. That's Intel 10nm (~same as TSMC N7). Unless you're Google or Amazon, the latest chips don't seem to be available for ~12-18 months after launch.
If you think that's odd, you'd be wrong. Look at Cisco's UCS offerings - all but the top end UCS blades are 3rd Gen Xeon (Ice Lake-SP), while the top dog is 4th Gen Xeon (Sapphire Rapids) which started mass production over 2 years ago. No Emerald Rapids.
~60% of the worlds 20nm-45nm production capacity is in China as well.
So sure, they are limited to tech that is very 2018/2019. Not exactly ancient history.