Meaning of 'Otherwise' in the Context

"Over the last several decades, scholars have developed standards for how best to create, organize, present, and preserve digital information for future generations. What has remained neglected for the most part, however, are the needs of people with disabilities. As a result, many of the otherwise most valuable digital resources are useless for people who are deaf or hard of hearing, as well as for people who are blind, have low vision, or have difficulty distinguishing particular colors. While professionals working in educational technology and commercial web design have made significant progress in meeting the needs of such users, some scholars creating digital projects all too often fail to take these needs into account. This situation would be much improved if more projects embraced the idea that we should always keep the largest possible audience in mind as we make design decisions, ensuring that our final product serves the needs of those with disabilities as well as those without. "

Question:

In 'many of the otherwise most valuable digital resources are useless for people who are deaf or hard of hearing, as well as for people who are blind,' what does 'otherwise' mean in this context? Does it mean an imaginary situation of the opposite of its previous sentence "What has remained neglected for the most part, however, are the needs of people with disabilities", thus implying "if the needs of people with disabilities were not neglected?"