~snip
I'm one of those that believe you can store huge funds in hot wallets, regardless if you are unable to purchase hardware wallets.
Getting offline wallets may be a big deal, I can suggest using wallet like Electrum, extract seed phrase, create WOW, afterwards delete wallet and file completely from your device, this way you won't be a victim.
There are also hardware wallets that requires you to connect to an online device, that is why Airgapped hardware wallets are preferred.
Large scale investors are mostly those that goes for hardware wallet, except you are capable of purchasing one.