Building a business on blank cheques and accidental spends is shady. It's also a large barrier to adoption. The more times devs see reports like, "I tried [random 20-minute tutorial] and woke up to a bill for my life's savings and luckily support waived the fee this one time but next time they're coming for my house", the less they'll want to explore your offerings.
Neither is what I want. I wish there was a provider with clear and documented limits to allow proper capacity planning while at the same time shifting all the availability risk to the customer but taking on the financial risk. I'd be willing to pay a higher fixed price for that, as long as it is not excessive.
Didn't know there was a verb for it! I "homelab" too and so far am very happy. With a (free) CDN in front of it it can handle spikes in traffic (that are rare anyways), and everything is simple and mostly free (since the machines are already there).
I'd fire a box up at home instead but at ~£35/mo I can never quite find the motivation compared to spending the time hacking on one of my actual projects instead.
(I do suspect if I ever -did- find the motivation I'd wonder why I hadn't done so sooner; so it goes)