Startup Idea: Smart Text Suggestion Software for PCs

Startup idea to develop a text suggestion software for PC, much like smartphone keyboards that make typing faster and word suggestions easier. This utility could assist in a variety of tasks such as writing, accounting or banking. It could also include personalized word suggestion based on frequently used words.

I type a lot when I write for a project I'm doing and sometimes I find myself wanting to use my phone as it has a better keyboard where it suggests words. Sometimes when I'm writing the program suggests a better word than I was going to use.I don't know if it's possible or if it's available somewhere already. I wonder if something like that could be made for PC maybe you can even input words you use a lot. Say I type a single letter then press space to fill in the first word it's suggesting. I think this could work well for many jobs not just writing, menial jobs like accounting or banking.

I would pay for it as I think it would save me so much time. I also think it will help with my writing as well as other jobs.

I think it can be done by only a few people, but I'm unsure about that.