Being smart and not rushing forward with developing a multi-billion dollar 5th gen fighter that would most likely require foreign parts, which would defeat the purpose of it being an "indigenous fighter". You know...that.
India shouldn't do this yet. Wait a while, gain some experience with the FGFA and the go ahead after that. Trust me when I say that India would be better of just finishing the Tejas and developing it further before attempting this massive project.
It's not about jealousy, nor is it about Pakistan's capabilities. No one on PDF would ever claim that Pakistan is capable of developing a 5th, atleast not without massive help from nations such as China or Turkey.
This is about India, is it ready for such a massive undertaking? Does it have the experience needed to develop a 5th gen with purely domestic parts? I can tell you that it is a no on both accounts. Getting the parts from foreign nations and assembling them is easy, anyone can do it, but India is trying to go for 100% indigenous 5th gen fighter, which it can't do. The Tejas is a perfect example of this.
I've said this many times, gain experience through the FGFA before attempting this.