What would be better for them? Like, maybe there's something technically better, if everyone switched, but as an individual, what else would you use, that has the same level of accessibility for non-technical people, open sourceness, and wide acceptance that makes it easy to find someone who can work on your stuff, plus one click setup type cloud providers?
Time is money is opportunity cost though. If a proprietary provider is able to get you up and running faster then that's more time you have to spend on other things, like the rest of the business. Let's be real, the chances of getting shutdown if you're not in a grey area is pretty slim - if you are, eg crypto, porn, cannabis; then I'd not use a proprietary provider - what is "beat" is time spent on the product instead of upgrading WordPress plugins.