For anyone regularly using these apps it's scarcely shipload - Office H& gives you Word, Excel and Powerpoint (and Outlook for anyone interested) for £153, £1 a week over three years or more. When I got started 20+ years ago Quattro Pro spreadsheet at £50 was the low cost alternative to 1-2-3 and Arnor Protext likewise to WordStar at £200.
Yes there are alternatives (the now ten year old Lotus WordPro is IMO much better in many respects than Word) but they bring their own costs in terms of compatibility issues. If you're an employee, being up to speed in Office is a marketable skill; can the same be said of OO?