I hear you. I think One Computer and One Person issues have generally been solved by Office Online or Google Spreadsheets. I can't speak to difficulty around lack of universal time nor do I know how important of a requirement that is to most companies.
Any solution, SaaS or otherwise, will have flaws. It might solve Excel's weaknesses really well, but will likely lack its strengths.
Excel is still going strong in 2017 to a large degree because its strengths continue outweigh its weaknesses and that people have found reasonable ways, or add-on tools, to work around it's weaknesses.
It will be interesting to see in the coming decade if niche industry solutions or an even more incredible swiss army knife were to come around and dethrone the incumbent.
Any solution, SaaS or otherwise, will have flaws. It might solve Excel's weaknesses really well, but will likely lack its strengths.
Excel is still going strong in 2017 to a large degree because its strengths continue outweigh its weaknesses and that people have found reasonable ways, or add-on tools, to work around it's weaknesses.
It will be interesting to see in the coming decade if niche industry solutions or an even more incredible swiss army knife were to come around and dethrone the incumbent.