I'm not sure if you understand the connection between telegram and ETH, maybe you could explain?

I only know that Telegram wants to launch a cryptocurrency, Which can compete with bitcoin, Ethereum, and Ripple

Well I think that it definetely will be successful but I'm not sure if it could compete with Bitcoin or Ethereum.

Guys who has been working on this project for a long time? What profit did you earn? (if it's not a secret, of course?)

Judging by the money they got from pre ICO and all the hype around Telegram, I think everything is possible

You shoud consider a lot of facts such as project's working sphere, development team, economic model, protection of investments, technical solutions and more.

I've read on their CEO post that he's interested to go deeper and study the positive and negative aspects of these technologies, and how best to use them in their services.

Well, this is a good result, don't you think?

they ensure to take their time to prepare and hope for a successful ico, taking turn and optimizing their platform and giving the community a feel of it eg their bounty portal so basically they are been serious with this project and it has all its pointers in one place

Unfortunately, nope. It will be something new, I mean really new - fenomenal! Telegram Open Network will be a new flexible multi-blockchain platform capable of processing millions of transactions per second, with upgradable formal blockchain specifications and multi-cryptocurrency value transfer