These days, neitz (at least in the Northeast of America) is at approximately 7:10 AM. There are many minyanim that I've been to that daven at 6:50 or earlier throughout the year, all but guaranteeing that shemoneh esrei is being davened before neitz.
What are the heterim for this? When the sole reason to do so is because that's the time the minyan happens thoughout the year, what are the reasons why this is muttar and that minyanim do not push off davening to hit neitz (even when it's just a minute or two off)?