I see so often developers state something along the lines of, "We need to go with AWS!" (sometimes substituting AWS with GCP or Azure) and the reason they always give is "scalability". 99% of the time, what they're building not only doesn't need to scale to that degree but they somehow seem to think that it's always inherently cheaper.

Meanwhile, when I build something for a client my first go-to is something like DigitalOcean or Amazon LightSail. I know, LightSail is still AWS. But it's not going to automatically increase the bill by 300% because someone accidentally toggled something in AWS's byzantine admin console.

When ("if" is more often the case) that client starts to see the kinds of traffic that necessitates a full-scale AWS build out then I'll advise them of their options. By that point, they're actually generating real revenue and, as importantly, they didn't pay me to prematurely optimize a product that wasn't yet generating any revenue, which helped them succeed.