Ubuntu has noticeably reduced fragmentation of the "user-visible" Linux (client-side). Fragmentation of the server side Linux (Red Hat, SUSE etc) is less import

Ubuntu has noticeably reduced fragmentation of the "user-visible" Linux (client-side). Fragmentation of the server side Linux (Red Hat, SUSE etc) is less important. Ubuntu has also somewhat lowered the startup costs and the learning curve. Of course, only so much can be done in this department.