Do they ever. And seem willing to adopt whatever might help, without thought to the long term integration consequences. The disaggregation of Salesforce is vast.
That’s an original sin. I worked for what was essentially a marketing firm with a set of large assets to mock up and sell aka a casino. They had stuff going back to 2000/2001 into 2018 still in production. Really the uniting characteristic was somebody was able to sell something with whatever piece of software.