The phrase "are so advantageous" is correct and usable in written English.
It can be used to emphasize the benefits or positive aspects of something in a statement.
Example: "The new policies are so advantageous for employees, providing them with better work-life balance and increased job satisfaction."
Alternatives: "are highly beneficial" or "are extremely favorable".
Brody: Part of the value is based on the economics of SaaS the advantages of SaaS are well documented and the economics are so advantageous that adoption is growing fast.
Captive REIT deals are so advantageous for sponsors that some analysts expect many more of them.
It can't be long before things are so advantageous for female comedians that we won't even refer to them as female comedians any more.
XXXV10 We shall train the light infantry also in the same evolutions, which are so advantageous in case the enemy appears suddenly.
Cell membranes must have been so advantageous that these encased replicators quickly out-competed "naked" replicators.
Why would a left-handed guy bat right-handed in the first place, reversing the throws-right, bats-left preference that is so advantageous to a batter?
The new mutation is so advantageous that its carrier leaves lots of offspring many of whom carry the mutation and the other linked genes.
Zynga's genius here is in offering a range of purchasable services that are useful, without being so advantageous that players could be accused of buying victories.
But an ambassador this terrifying would surely, far from being ludicrous, be so advantageous to US influence, that she would be wasted anywhere outside China, with the possible exception of Afghanistan.
The bid by Mr. Boies and his partner Richard Drubel was so advantageous, the judge said there was a savings in legal fees of tens of millions of dollars, which he called "successful beyond my imaginings".
They are also betting on the European element of the BT Vision deal being so advantageous to all parties it will be enough to get the Celtic nations, who are struggling financially, on board.
