The main reason why ICO these days are failing is because every team just planned how to gather funds and not on how to really deliver a product. I used to aim for projects that have been in the technology space for a long time, similar to Sylo. They have been in this industry for more than 5 years now and they are recently working on decentralization through blockchain on their communication platform. It's more likely that a project and team that has been around for a long time to succeed than a team that was set up just like a showcase for ICOs.
I've noticed this one too. Taking your example I search about Sylo and I can see they were active way before even crypto started being hyped, I can also name a ton of projects that had platforms and applications before trying to move toward blockchain. That is the best approach for a project to succeed, since we saw what a massacre 2017 was were more than 90% of ICOs failed and the money went missing.