Bespoke Voiceover work for voicemail and mobile, is this a trend all recognisable VO artists should follow? a quick buck? or making ends meet?

Best known UK Voiceover -X-Factor Peter Dickson makes bespoke mobile tones,,,

Home of Voiceover Man Peter Dickson from the X-Factor and E4, personally recording messages, voicemails, ringtones, SMS Alerts just for you and your Mobile - also Weddings, Birthdays, Congratulations, Wake Up Calls etc- http://www.myruddyvoice.com/

Bespoke Voiceover work for voicemail and mobile, is this a trend all recognisable VO artists should follow? a quick buck? or making ends meet? What do you think?