The phrase "has ever been possible" is correct and usable in written English.
It can be used when discussing the potential or feasibility of something at any point in time up to the present.
Example: "In the history of technology, there has ever been possible advancements that changed the way we live."
Alternatives: "has always been possible" or "has at any time been possible."
The constant stream of junk mail offering pre-approved credit on a charge-card has helped huge numbers of people to get deeper and faster into debt than has ever been possible before.
Coupled with the PS3's high-definition graphics (the Wii is not high-def), the Move replicates certain types of physical activity, like golf, Frisbee tossing, bowling and sword fighting, more accurately and enjoyably than has ever been possible in the living room.
What formerly took a lifetime of study, if indeed it has ever been possible, can be performed rapidly and comprehensively.
"The campaigns use the social capital that people have to engage in more sophisticated field programs than has ever been possible".
The telescope's honeycombed structure of (literally) gold-plated mirrors will help scientists see further into the history of our universe than has ever been possible before.
Using pull we can create the conditions by which individuals, teams, and even institutions can achieve their potential in less time and with more impact than has ever been possible.
Modern communications enabled governments to create and propagate a national ethos, and allowed states to intrude into the lives of their citizens more than had ever been possible.
Beginning at the turn of the century, the growth of the technology of mass communications the movies, the phonograph, radio, and eventually television created a potential audience for stories and music and theatre larger than anyone could previously have dreamed that made it possible for music and drama and pictures to reach more people than had ever been possible.
This is a staggering amount of information and it really breaks down the play in ways that just wouldn't have ever been possible without access to cloud resources like this.
"Less than two years ago I could never have believed, with the record of mutual intelligence co-operation the UK and US had between these countries that visiting Libya, Tunisia and Egypt would have ever been possible for me.
Making calls from space, the ultimate in long-distance dialing, is easier than it has ever been, with direct calls possible whenever certain microwave radio signals are available to the station, so astronauts need not be isolated in times of crisis.
