Stormshield is a very good product but it's mainly designed for industrial scenarios and lacks some features that are essential for an enterprise NGFW (i.e. the protocol inspection covers very few protocols compared to PA/Checkpoint/etc). Unfortunately the enterprise NGFW scenario is dominated by US or Israeli companies, even if some niches brands like Stormshield for OT and Clavister for telcos are Europeans
Stormshield firewalls offer a plethora of IPS protections and signatures, not just OT related ones. There are different licenses, offering varying protections and signatures.
Stormshield firewalls can certainly be used in enterprise settings. OT environments are an added bonus where Stormshield firewalls can be used as a protective layer.
Stormshield's IPS is its major strength, being very well integrated in the overall firewall design. The whole firewall rulebase is designed in terms of its IPS; I am not aware of any firewall on the market that has such a nicely integrated IPS.
Also, at the point where one runs out of IPS options to configure, whereby I'm not referring to signatures in the general sense of the term, and one also has adapted all of Stormshield's available signatures to the needs of the particular environment, the real fun of creating new custom IPS signatures begins.
Stormshield's roots date back to 1998's NETASQ, and so I would say they are of a similar pedigree as Check Point, in terms of their history.
Disclaimer: I'm a Stormshield Platinum Partner and hold a CSNTS.
Stormshield is a very good product but it's mainly designed for industrial scenarios and lacks some features that are essential for an enterprise NGFW (i.e. the protocol inspection covers very few protocols compared to PA/Checkpoint/etc). Unfortunately the enterprise NGFW scenario is dominated by US or Israeli companies, even if some niches brands like Stormshield for OT and Clavister for telcos are Europeans