Overlook B2B vendor-client relationships at your peril...
When trying to break into a market "Is there product-market fit?" is the totally wrong question to ask.
The real question to ask in B2B markets is "who owns the relationship which X organisation has for Y category or product"
You can have the most aligned marketing in the world but if a supplier has developed a close relationship with a client. They practically own that client for all products in that category. They probably deal with them on weekly basis. Their relationship could be even akin to "old friends". If you think you can break this - with a brochure, cold calls or a drip email campaign - you could be in for a very big surprise.
How do we solve this?
In the 1970s Japanese motorcycle manufacturers (like Honda) came across this problem. The relationships motorcycle manufacturers had with dealers was close. In fact, it was too close to even try to disrupt. What did the Japanese do? They had no other option but to find a completely new channel - which at the time was department stores. This worked for them.
Like a UK manufacturer of air conditioning units discovered the relationships the legacy players had with facilities managers too tight to disrupt. So, instead they targeted owners of older properties where the there was not this stranglehold.
Lesson
Stop thinking about your B2B product in terms of alignment or features. Start thinking about your product in terms of relationships that exist in the channel - and you will see your market in a totally different light. And start thinking about how powerful marketing outreach platforms or your cold calling campaigns really are in disrupting relationships. Or, think about new channels or new markets where you side-step close vendor-client relationships.