Is it possible to see the features of the site hidden behind a paid subscription?

Question

Web development

Hi everybody. I understand that the question is quite strange and not very acceptable for some, so I apologize for the early.
And so, to the point.
There are several projects that are implemented in such a way that it involuntarily becomes curious how this or that function is implemented.
Example: There is a site with paid access to features. Without a subscription, there is no way to use the services of the site, and for sure, when subscribing, you can’t see how what is interesting is implemented.
Is there any way to see how everything is implemented? For informational purposes only, for the sake of interest and development. Do not think badly, we are not going to steal anything.
Now the back question.
There are a lot of leaked websites, shops, etc. on the Internet. How can you protect your project from this?
For example, why are there no merged large projects on the Internet? An example of VK is only its analogues.
How to protect the site from such moments?
Thanks a lot for the answers!

Answer 1

Great plan:
1. Find out in which data center the project you are interested in is hosted
2. Post CPU or extremism in the comments to a random site from the same hoster
3. Take familiar cops and break into the hoster's data center, take out the computers of the "extremist" and the ones you need, well, purely for the company, "by mistake"
4. Copy what you need
Another plan:
1. Give money to hackers so that they crack what you are interested in and give you a copy
Third plan:
1. You bribe one of the employees to give you a copy
. Another plan:
1. Become a cool specialist yourself, and find out everything that interests you
. Still need to invent, or is it enough already?
I have not yet listed such boring ways as "google, maybe they talked about their own infrastructure" or "look for similar open source projects". It's not as interesting as driving into the data center in an UAZ.

Answer 2

Write a project so that it is hosted on a dozen other servers, divide tasks between programmers
according to the principle of black boxes (this is the data you receive, you must give it further).
Pay big money to a person who knows how the whole system works.
And all the same, it will probably be like exist.ru, when the co-owners pissed off.