Actually most people are wanting to look at the source to evaluate whether or not this is worth investing in.
There have been many scams in altcoins. So auditing code, is pretty essential, imo.
The fundamentals of distributed cryptocurrency, and trustless actors (including the original devs), is dependent on open source. Otherwise you are basically left with a centralized coin, where you need to trust the dev.
Ultimately, nothing wrong with that.. but it is what it is.
Do you ask Microsoft to look at their code for a new OS before you buy their stock? Did Facebook or Google release their code before they had their IPOs?? NO!!! The Dev owes no one ANYTHING!! invest at your own risk, if you can't deal with that, invest elsewhere. No one is forcing you to invest here. Crying out loud what a bunch of whining babies who feel they are entitled to something.
Except this is an open source community, while everything you just cited isn't.