here are few my opinions what Construct can do to spread words
1. in the free version don't provide build service and Increase the free events OR make it unlimited events for free users because. and yes this system will have some cons like people can work without pay and then can build by just paying single month. but in this case you can force people to buy yearly license and this is also not good. (just ignore first point)
2. Provide FREE license to gaming Youtubers OR such youtubers who make content like game development and they will promote you product by making content on construct 3. You can do this by creating a form which youtubers will apply and then you can check their channel and give them FREE license. I know few companies did same thing to promote their product.
these 2 things came in my mind So I did share.