In a sistem wich has no reward for the people who stake their IOTA, like the Tangle is supposed to be, how can they run a DECENTRALIZED ORACLE SERVICE?
And if they will be decentralized, WHAT WILL PREVENT A MALICIOUS NODE TO ACT AGAINST THE NETWORK?
We don't even know if the smart contracts will be with oracles and/or on the IOTA network (both have been researched by the IF), so I'd wait to ask when that is known--likely, a month as was stated in
https://qubic.iota.org/Basically do you have to pay to use the smart contract on IOTA
Unknown.
There may be instances where you have to pay and you don't have to pay. Or it may be all pay or not. What I'm wondering is, "Are cheaper than Ethereum and other smart contract platforms?"
If I had to wager, I'd bet at least some contracts require payment as you are asking for the use of computer resources and someone has to pay the cost. I'd also bet they are cheaper due to IOTA's network efficiency.
Also I suppose the sistem will be scalable compared to Ethereum smart contracts