Assistive technology is often not adopted, or else abandoned entirely, because of issues to do with design (lack of appeal) or comfort (poor ergonomics).
ɐsˈɪstɪv tɛknˈɑːlədʒi ɪz ˈɔfən nˌɑːt ɐdˈɑːptᵻd, ɔːɹ ˈɛls ɐbˈændənd ɛntˈaɪɚli, bɪkˈʌz ʌv ˈɪʃuːz tə dˈuː wɪð dɪzˈaɪn lˈæk ʌv ɐpˈiːl ɔːɹ kˈʌmfɚt pˈʊɹ ˌɜːɡənˈɑːmɪks.