Also .. Starlink.
Power is a larger concern - in rainy season we've been having outages several times a week, though most are short. That will vary based on location.
In any case, if renting a house, check for fiber & check whether they have a generator or a few UPSes at least.
Another HNer mentioned Costa Rica's internet connections during power outages, hence my question: https://news.ycombinator.com/item?id=28169281
There's also good LTE (as a fallback) in many villages that cater to tourists, but coverage is spotty as you get more remote.
Again I don't really see power outages last longer than an hour or so, but my laptop manages to run for about 2 hours with a 4g modem in it. I used to be able to go even longer with an extra battery back when laptops still had those -- So really as long as you're not lugging around a UPS and desktop for some reason you should be good for at least that much time.
If it's out longer than a day I pretty much just pack my stuff and head into the city. I recognize most people don't really have this kind of luxury with the kind of work they do but I specifically worked my way to this point where I can afford to do this and maybe if you stretch your imagination in terms of possibilities you can too
Either way I've come to view bandwidth that high as something great if you're running severs or whatever but kind of overkill if all you need is enough for a small home office
For symmetric fibre for business you might want to look at this company's business offerings: https://www.data.cr/ but other than that you're only going to find that in data centres