You will end up paying much more for your services, along with spending a ton of time maintaining it (and if you don't, you will probably find yourself on the end of a 0-day hack sometime).
In Northern/Western Europe, where power costs around €0.3/kWh on average, just the power consumption of a simple 4 bay NAS will cost you almost as much as buying Google Drive / OneDrive / iCloud / Dropbox / Jottacloud / Whatever.
A simple Synology 4 bay NAS like a DS923+ with 4 x 4TB Seagate Ironwolf drives will use between 150 kWh and 300 kWh per year (100% idle vs 100% active, so somewhere in between), which will cost you between €45 and €90 per year, and that's power alone. Factoring in the cost of the hardware will probably double that (over a 5 year period).
It's cheaper (and easier) to use public cloud, and then use something like Cryptomator (https://cryptomator.org/) to encrypt data before uploading it. That way you get the best of both worlds, privacy without any of the sysadm tasks.
Edit: I'll just add, as you grow older, you come to realize that time is a finite resource, and while money may seem like it is finite, you can always make more money.
Don't spend your time hunched over servers. Spend it doing things you love with people that matter to you. Eventually those people won't be there anymore, and the memories you make with those people will matter far more to you in 20 years, than the €20/month you paid for cloud services.
Google One for 10TB is 274,99€/mo (at least in my country) so you'd make the entire nas price and subscription cost within a few months, let alone years.
There just aren't compelling public cloud for large sizes (My NAS is 30TB capacity and I'm using 18 right now) and even if you go the more complex loops with like S3 and whatnot you still get billed more than it's worth. Public cloud is meant for public files, there's a lot of costs you're paying for stuff you don't need like being fast to access from everywhere.
This is a Linux phone that actually works, running Debian. It has a battery that competes with the runtime of any modern phone. It has a snappy UI and can reliably make calls. Already it’s the best Linux phone in the world, just on that basis.
They’re selling it for the same price as the outgoing model despite tons of bullshit tariffs being levied against them. What an achievement!
I want a Linux phone that works, and I want to support a world where Linux phones exist and are financially viable to make, therefore I will buy this as my next phone.
I don't think depending on Android drivers and having to run a small android just to access said hardware makes it a "linux phone". Especially when the linux experience is compromised because of it.
postmarketOS has no hybris and everything works great, but no device has all the drivers (in fact, no device at all is reported as having a fully functioning camera, let alone everything else) so there isn't a "flagship" device.
If I were to overspend on a linux device I want it to actually run Linux, not a handicapped version of it.
And even then, why stop at the OS? Why is this overpriced "linux" phone not boast having user-friendly and sustainable things like a replaceable battery (probably because it doesn't?). People in this niche don't want just a Linux phone, they want a phone that respects them.