Hacky workaround to force newLine

gistfile1.html

<apex:page readOnly="true"
       contentType="application/octet-stream#MyCsv.csv"
       sidebar="false"
       standardStylesheets="false"
       showHeader="false"
       cache="true"
       expires="0">
       
       
<!--
This will create a newLine, but will insert an empty space in the first column of every row.

<apex:outputText value="Column 1,Column 2,Column 3"/>
&nbsp;<apex:outputText value="aVal1,aVal2,aVal3"/>
&nbsp;<apex:outputText value="bVal1,bVal2,bVal3"/>
&nbsp;<apex:outputText value="bVal1,bVal2,bVal3"/>
&nbsp;<apex:outputText value="bVal1,bVal2,bVal3"/>
&nbsp;<apex:outputText value="bVal1,bVal2,bVal3"/>
-->

<!--
Use a dummy "rowCount" column to still force a newline, but preserve the actual value (e.g., no uneccessary space)
and attempt to not lose too much value by having a somewhat not-useless column (debatable)
-->
<apex:variable value="{!1}" var="rowNum"/>
<apex:outputText value="Row,Column 1,Column 2,Column 3"/>
{!rowNum},<apex:outputText value="aVal1,aVal2,aVal3"/><apex:variable var="rowNum" value="{!rowNum+1}"/>
{!rowNum},<apex:outputText value="bVal1,bVal2,bVal3"/><apex:variable var="rowNum" value="{!rowNum+1}"/>
{!rowNum},<apex:outputText value="bVal1,bVal2,bVal3"/><apex:variable var="rowNum" value="{!rowNum+1}"/>
{!rowNum},<apex:outputText value="bVal1,bVal2,bVal3"/><apex:variable var="rowNum" value="{!rowNum+1}"/>
{!rowNum},<apex:outputText value="bVal1,bVal2,bVal3"/><apex:variable var="rowNum" value="{!rowNum+1}"/>
</apex:page>