Ridiculous. I've done successful startups with no home calls at all, and all after-work emails read the next morning. (before* cell phones nearly every startup worked this way)

If you want to be a services company, go ahead and have emergencies.

If you want to be a product company, plan ahead and do deep work instead.

Remember: urgent ≠ important

* in fact, in the before times our home numbers were usually public information, available to all but used by few, because either (a) it was societally unacceptable to call without having a good reason, or (b) that call cost something, if only a dime. https://www.theonion.com/creepy-old-man-has-book-filled-with...