[noelsusman]

>I heard so many times bullshit like "I don't know if you'll be alive in a year or two, so I can't adopt your technology")

That's a completely valid reason to not take your business, and it's a problem that US startups face just as much. Personally I don't touch products from startups with a ten foot pole unless the benefit is overwhelmingly massive (very rare) or it's designed as a one time purchase with little necessary long term support.

If you're selling to businesses then longevity is going to be a top concern no matter where you go. Whatever benefit they get over your mainstream competitor is likely not worth it compared to the risk of incurring the cost of switching technologies twice in a short amount of time.