There's a real dilemma for game developers, if they design games that everyone can play then the graphics will suck (comparatively) and features will be limited against the current games market. If a game releases with top end graphics and features its play will be limited to those with the newest shiny equipment.
Naturally whether you have sufficiently powerful equipment and/or internet access depends on:
- Money (you have or do not have the funds)
- Preference (you choose not to allocate funds or purchase particular equipment for other reasons)
- Location (Internet/wifi/broadband access may simply not be available or economic)
We live in a big world, so an approach that allows flexible graphics and flexible internet access options makes most sense.
For example Watch Dogs now builds online into its SP game, but you can switch it off.
That said, completionists can't get their 100% achievements without it.
Over time, the option for multiplayer and in some cases the need for multiplayer will increase because those without internet access will diminish but is unlikely to disappear. So the games producers are likely to want to satisfy >80% of the potential player base but are unlikely to feel they have to cater to >95% as that extra 15% is the most difficult to accommodate.
That's why Console development is popular and why PC builds are tied to them, because you know where you are. You know how many people have them. You know what your market is and what the consoles do. Not 10,000 variations of PC builds.
The bar will rise.
There was a time when you had to slowly wait for images on a website to display (line by line...) when I had a 28k dial-up-modem.
With a 60Mbps broadband I'm feeling well served but as speed averages increase the wish for games and other media producers to push more data through the pipe will also increase.
Multiplayer will increasingly exist and/or increasingly be mandatory. If that freezes out some people, then over time that becomes an acceptable reality to games producers.
I don't think we are at that point yet and I hope/trust that BioWare will allow SP game players to play without shackles for as long into the future as possible.
That flexibility and consideration for the bandwidth restrained should not deter optional awesome multiplayer content where that works.