[koalalorenzo]

The real question is: why he is not using an Hardware Wallet? A ledger wallet is cheap enough if you get worried about your BTC being in an unsafe device. Yes, then you have to trust the company selling it for you, but isn't that the whole business to not compromise their own devices?

[iRobbery]

Even if he would have somebody would mention, 'yeah but if you did not make the hardware yourself, you dont own your BTC'

I guess at least :)

[tsukurimashou]

his point is not "if you didn't make it you don't own it" his point is about proprietary software and how closed / how your control over them is very limited

[deweller]

Hardware wallets are a good compromise here. Sure, you need to trust the hardware vendor. But the attack surface for a hardware wallet is way smaller than with a big OS.

There are much bigger attack vectors than the operating system vendor. Even using with a FOSS OS, you are susceptible to viruses or other attacks not initiated by the OS vendor.

Use a hardware wallet or cold storage. Use a multi-sig wallet for corporate-sized quantities.

Holding your own BTC is not simple but there are good solutions. Be safe out there.