With respect to allowing others to view the results, things have not changed too much: Even now, when you embed an ArtWorks file with true colour sprites, JPEGs, text areas or clipping into another document you have to advise any potential recipient of the file to get hold of the latest AWViewer to view it. True, up to now, the latest AWViewer was free (and could even be sent with the file), but displaying embedded ArtWorks files correctly required user intervention by the recipient in any case, now it might require a small payment as well. By the way: There has been a period of time in the past (2002) when the latest renderer was not free either - for some time after I added true colour sprite support, the upgraded renderer was only available as a chargeable upgrade.
I do not think what you brought up is really a big issue because as far as I can see, the vast majority of ArtWorks users are mainly interested in using ArtWorks files in their own documents and few want to give away the resulting files in their native editable formats (e.g., OvationPro) including embedded ArtWorks content.
It is quite likely that sooner or later the new renderer will be released for free anyway - just as it happened in 2002 when the new sprite rendering code was made available for free as part of the 32-bit upgrade - which in itself was a massive effort. So, paying for the renderer upgrade is a bit like a donation scheme where donors have the added incentive of getting the new program immediately, but everyone profits because the software is eventually released for free.