I'm annoyed that most of the answers are just "no".

It's actually a great question, but practical experience has shown that closed-source software is just as buggy when written, and only slightly harder for an attacker to figure out, but much much harder to fix. And that's not even talking about deliberate anti-features, like every app that hoovers up your data and sells it so you can order a pizza.

Putting aside the idea that everyone can read the code and find/fix exploits, sometimes it's good to be open to vulnerabilities because you know where/what to fix.

Sometimes closed code it's exploited for years before the owner or general public finds out, and that leads to more problems.

Security through obscurity is a notoriously sophomoric strategy that won't keep out a dedicated attacker

That and some major proprietary software has had built-in backdoors for decades at this point, I'm pretty sure (I think this is more of a Windows than an Apple thing, but Apple has its own issues)

What you're describing is effectively an attempt at security through obscurity, which doesn't work. If an attacker is interested on a specific target, going through the source code searching for bugs isn't too different from performing a black box attack.

Yes and no. While people can read the code and potentially exploit it, the opposite is also true. Having full access to it means others can find flaws in the code you've missed and contribute improvements to it. Being closed-source can be a detriment in that regard, so much so companies often rely on external security audits and the like.

Global privacy based Gpay alternative does exist, see monero. Monero is less than ideal because of its volatility though. Also, really difficult to convert to actual money.

The thing with Gpay (American one) is that they don't handle the actual transfer for domestic transactions, Visa and Mastercard does.

Security through obscurity doesn't really work well. Look at how Windows is closed source yet most malware is made for it due to its.market share.

Also, Chrome is kinda open source (not completely but look at Chromium).

With open source, if there is a security issue, it can be identified and fixed quickly. If the dev doesn't fix it, you or someone else could fork the project and patch it.

Good question. I've always wondered in general about open source and hackability. Like is Linux much more hackable then Windows or Mac ?