Is your startup / company deploying on Solaris? Nope of course you aren't - who is?! Pretty much nobody nowadays - w3techs.com shows Solaris at 0.0005% for webservers for example. Everyone talks about how great it is(to be sure there are some small bits that are pretty dang amazing) - yet for some reason nearly no one actually DOES use it! Perhaps there is a reason for that. Lord knows I have many battle scars from the many real world rough edges that never seemed to get less fundamentally shitty(for starters: path_to_inst and smf I'm looking right at you!)
I definitely respect the amazing work of some of the engineers on the Solaris team back in the day. ZFS and DTrace being two that have made the tech world by in large a better place either directly or thru inspiration. And Linux and the BSDs are definitely better for those selective code gifts! But nonetheless, the world voted with their feet, and Solaris didn't make the cut.