Although I no longer trust a lot in new projects, but your words are correct in general, no project can succeed immediately, but rather needs time to complete the worksheet, discover mistakes and work to fix them, and also until it gains popularity among people.
Unfortunately, most projects end after the coin is listed in one of the exchanges, and most of the time the project is not followed up by the project team, so the project fails. Successful projects need continuous follow-up and require a lot of time and work.
Well, it's natural that a project needs time to develop, because when the project is finished in sales, the team needs time to develop the project. sometimes the time given is 3 months, but I feel that the development of a project is more than that. a few things to think about are investors and bounty hunters who immediately sell their tokens when the project is listed in a market.