To the OP,yes,you definitely could become an electrician,but paying an exorbitant fee,would not guarantee anything.
As a taxi driver,you will appreciate the "not going the quick route" banter
There are many threads,detailing the many ways of entering the job,but i can give you a cautionary tale,regarding a lad i know.
He has worked for me mate,for many years,in the fencing job,and signed up 8 years ago,at a training provider,over in West Yorkshire.
He was promised the moon on a stick,and a big list of hopes,dreams and contacts. His course consisted of many modules,some at the training place,some home study,with other options mentioned...
To date,he insists he is still working towards the promise,the training place sold him. He has spent nearly five grand.
He is as close to being an electrician,as i am,to Jupiter.
I have spoken to several lads,who ended up in the electrical trade,and did use the short-course route,but they seemed to get where they were,in spite of it,and not because of it.
Do not let any of this tough-love,dishearten you,but don't underestimate the additional parts of your intended journey,like time and experience.
Good luck.