Golos in short is the Russian version of Steemit that will run on it's own side chain.
The response for Golos is very mixed, but from what I see mostly negative, so here is my objective take on it with a personal note on the bottom, analyzing the Golos project and stating it's pros and con's in no particular order.
The golos team is "unrecognized"
Unlike Steemit, the golos creators are mostly unknown people in the crypto community, unlike Daniel and Ned, with Dan specifically as someone very well known from the early days of bitcoin to the bitshares community and etc... making him very reputable and trustworthy. The Golos team lack's in this, so general people acceptance might be low and building trust will present a big problem for them. They will also face great problems, such as rising money for their project, they will need build trust first for people to invest in them. You can see this by asking yourself if you had 1000$ that someone gave to you would you invest in Steemit(Steem) or Golos?
"Markets" like Golos, add competition that is healthy. In this particular case this will push Steemit to support other languages even more, or might even result in not supporting at all and making Steemit and English only community what is again not bad since we (Steem) will gain from those networks directly or indirectly. But it also creates, both less and more pressure on Steemit.
Other countries have way different cultures, what might be acceptable thing in your county might be negative in others. This could cause unwanted problems.
As mentioned in Dan's "Evil Plan" I have previoulsy made a picture post about, he mentions the creation of side chains, so no wonder why Steemit inc. wouldn't support projects like Golos. He's vision expands way beyond Steemit...
The "Steemit challenge"
They will face the same challenges Steemit faced in the early days, with It's a scam, spam, plagiarism, abuse, with their own rules, users etc...
Further decentralizing, this would create a new platform for Russian users with their own separate rewards pool, giving the Russians more money to be made. This could also cause users to seek translators, translate their English posts from Steemit and post them on Golos, providing more opportunity for money to be made, also vice versa, Russian to English. It's the free market, after all...
Personal note & Conclusion
I don't think that Golos would spark other projects like it to be created, for instance a community for each language, but what I could see created is a Chinese platform, I don't think that other language specific platforms will rise. This is the open market and it will respond in according ways, if something is lacking the market will react to it and provide it so Golos is a expected response. I haven't seen many Russians succeeded here on steemit, with success I mean that a Russian was able to gain 5000+ Steem over a period of 1 month. The same way the Chinese community isn't successful as well facing a another problem, being the sign up. As a steemit member and someone who's on Steemit to stay for the next 10 years( yes I do mean it), I'd like to see Golos switching from creating their own currency and essentially reinventing steem, to instead build their site on top of Steem block chain, the way Squeek.io did it. This would let someone as me switch easily from platform to platform while keeping my influence( Steem Power) across all platforms. This way I can share my power across platforms what benefits everyone using those platforms.
Will this make Russians leave, most of them yes, but not everyone will leave. People will have more options, who knows a Russian whale might rise and give rewards to Russian language written content and cause people to leave Golos and join Steemit. The possibilities are endless and trying to predict the market behavior would be tricky. Another problem this might represent is if for say someone makes and English post on "Golos" and how would it be accepted there, the same problem Russian bloggers face on Steemit now.
The decision is ultimately yours, what I presented on there was some pro's and con's I've identified for Golos and my personal opinion at the end. Thank you for reading! :)