I’ve dont think Ive ever known anyone refer to competitors as enemies, let alone more serious staff - frankly at best it sounds ‘childish’ and unprofessional. but sure, ymmv, but its not widespread.
as for OP, sure… companies are a collection of individuals and they talk all the time.
first hand, I know one of the aspect the manufactures love about Superbooth, is the opportunity to talk to others in the industry, so that can share their experiences…
ofc, you’ll only talk about ‘upcoming’ products with people you can trust… but its still useful/valuable to get feedback outside your own ‘bubble’
the smaller the company, the more this happens, because they can act as a small group of individuals , less ‘policy’ etc.
on the other hand, with bigger companies, you have more employees and contractors shifting around the industry, so there is always a certain amount of ‘cross pollination’
but none of this is EM specific , its true of every industry/sector.
btw: a good example of this, is in eurorack… the like of befaco these days are now manufacturing for other eurorack companies, to try to get some economies of scale on fabrication…
as for collaboration, e.g. trying to make things worth together with other companies products.
outside of agree standards, this is hard…
the issue is you create a dependancy, and thats not a good thing generally.
it does happen, but its rare, CLAP is a pretty good example , also Ableton Link, but they also demonstrate the danger… and took alot of care to highlight, that it was ‘open sourced’, so not being controlled by one party.
(hough even there, the danger is the original creator, always has an advantage/more power)