I have an older model Lennox Air Conditioner and when I turned it on today for the first time this year, the compressor unit comes on, but the fan does not come on immediately. Is this normal?

I've had this same problem the past four years. Each year I've had this same issue and it ultimately ended in the fan motor seizing up and then me having to replace the fan motor. Four years in a row with the same problem seems incessant to me. Should I just replace the entire system and be done with it? Also, each time I've replaced the fan motor, I've also replaced the capacitor. Does that need to be replaced annually?