Andre33, there have been relatively few “professional breeders” sufficiently blessed to have been paid to explore increasing the diversity of modern garden roses. For the greatest part, their livelihoods have been contingent upon their being able to deliver a steady stream of new commercial offerings. That simply can’t be done repeatedly when it is necessary to spend years, perhaps decades, engaged in the research and development of introducing different genes into the “product”. Those who have that “luxury” are, by necessity, amateurs to semi professionals, academics, even retired persons who are fortunate enough to have alternative sources of income and sufficient time to do the time consuming ‘grunt work’ generating the “break through” roses.