If the idea of zimbeck was this good, there would have been quite a long time since
opensource concurrent projects had already implemented it, plus make it flourish.
Since the concept is far from very complicated... true ?
Instead of that, it will probably remain unused and unknown
Well, yes and no. I would have to agree with you that the overall concept of escrow-backed smart contracts is not new, nor is it overly complex... however it would definitely
not be accurate to call it "far from very complicated".
I think the real reason that there has not been significant adoption (whether in the xHalo form or Ethereum/BURST/etc...) is that the actual applicability is still
massively limited. Is the Paypal model complex and not easily duplicated? Certainly not... yet despite being one of the worst (cost-wise, chargeback-wise, etc.) ways of receiving payments online... it is arguably the most broadly adopted.
How many people use contracts in their daily lives right now (smart or dumb)? If you aren't an attorney, large-scale employer, or management company - you basically never use them, or you use them only because they are provided by the vendor of services or goods you wish to consume... but in those cases you are not crafting the contracts, you are merely agreeing to them.
The same holds true for all crypto-currencies presently. Whether some altcoin with extremely limited distribution or the 'almighty bitcorn' - the odds of someone you wish to do business with having the both the coins and the desire to go through the process of conversion to fiat or inventory (depending on which they used on the front-end) is very, very slim.
The concept of crypto currencies in general are not terribly difficult to understand, nor that difficult to write... so why are 99% of them simply repackaging of BTC itself? Everything that applies to crypto in general applies
double to smart contract transactions... IMHO at least. I agree with your last statement "It will probably remain unused and unknown"... however if you are honest you have to admit that the same could be said about Bitcoin. BTC's market cap is <$4.8B USD... or to put it another way, about the GDP of Guam.
Even if blockchain technology winds up being the 'internet of tomorrow' and sees massive adoption in 10-15 years from now... how likely is it to even resemble what we see of it today?
I remember the internet of 1990 and how marginal and largely useless for anything other than academic exchange it was. I remember when my cell phone was about the size of an actual brick, and only worked in a few areas of the city, and cost $1.25/minute to use. Now I see four out of five people (of any age) glued to their smartphones 24/7
and only rarely using them to actually talk to someone.