Fonts the designer had to pay for, does not have the license to redistribute, etc., should be converted to a Smart Object, Shape or Curves prior to delivering the Creative so resizing of the text can take place. Any edits would have to go through the designer who holds the legal right to the font. If you wanted the font so you can make additional marketing collateral you should acquire your own license...or make your other creatives with a different (free, system) font
Likewise, if you have a design that has a pay font and you want a new designer to make you creatives using that font, when you deliver it to the designer for the job, you need to inform them the font is a pay font and strictly for use with your project. If the designer likes/wants to use the font on his own, they should acquire their own license to use the font.