The phrase 'ruthless exploitation' is a correct and usable phrase in written English.
You can use it to refer to a situation in which a person or group of people treat another person or group of people unfairly or cruelly in order to gain a profit or advantage. For example, "The factory workers were subjected to ruthless exploitation by their employer, who forced them to work long hours for minimal pay."
This could only be done by ruthless exploitation of the country.
Flying under Italy's bureaucratic radar leaves immigrants open to ruthless exploitation.
He seems to have decided that electoral gold lies in the ruthless exploitation of social and cultural wedge issues.
In the United States, thousands are held against their will; minors, especially, are the victims of ruthless exploitation.
I also have a major problem with what seems to me to be Meyer's ruthless exploitation of foetal teenage emotions.
But that same history shows that the ruthless exploitation of poor farmers does not result from technology.
Through this mechanism Bormann controlled the ruthless exploitations of the subjected populace.
The remainder of the game was all Anand's ruthless, cool exploitation.
The ruthless commercial exploitation of blockbuster exhibitions is nothing new, yet it sits particularly uneasily with a show whose unique selling point is a full-scale reconstruction of the Beethoven Frieze, installed at the Vienna Secession building in 1902.
Exported at the rate of thousands of chests a year from India to Europe to meet booming demand in the 19th century, indigo — often associated with ruthless colonial exploitation — was once used to dye everything from military uniforms to muslin frocks.
As this example indicates, the very ecological protest against the ruthless capitalist exploitation of natural resources is already caught in the commodification of experiences: although ecology perceives itself as the protest against the virtualisation of our daily lives and advocates a return to the direct experience of sensual material reality, ecology itself is branded as a new lifestyle.
